Count Dooku

"I have become more powerful than any Jedi. Even you."

- Count Dooku to his old master Yoda in Attack of the Clones prior to their lightsaber duel.

Count Dooku, also known as Darth Tyranus, and Head of State of the Confederacy of Independent Systems is the secondary antagonist of the Star Wars prequel trilogy. He is secretly a powerful Sith Lord and the second apprentice of Darth Sidious. He is the main antagonist of Attack of the Clones, a major antagonist in Revenge of the Sith, as well as the main antagonist of the 2008 animated feature film Star Wars: The Clone Wars and its 2008-2013 television series of the same name.

In his film appearances, he was portrayed by the late Christopher Lee, who also played Saruman, Francisco Scaramanga, Haggard, and best known for Count Dracula. Lee reprised the role in the Clone Wars animated film. In the Clone Wars animated TV series, he was voiced by Corey Burton, who also played Brainiac, Megatron, Captain Hook, Quint in Disney's Timon & Pumbaa series, and Shan Yu in Kingdom Hearts.

Background
He and his master, Darth Sidious, give orders to officers and commanders of the Confederacy, including General Grievous. Dooku also holds a Dark Jedi apprentice of his own, Asajj Ventress. Dooku is a challenging opponent in lightsaber wielding, and usually has the upper hand due to his unique fighting techniques and many years of experience. However, he was killed in Revenge of the Sith by Anakin Skywalker, the apprentice-turned-enemy of Obi-Wan Kenobi.

Dooku was once a Jedi himself. He was Yoda's padawan and he had a Jedi apprentice, Qui-Gon Jinn and another one named Komari Vosa. Qui-Gon was the master of Obi-Wan Kenobi. Once Dooku turned to the dark side, he could not turn back and quickly gained power both in authority and knowledge of the dark side of the Force. Dooku became one of the Lost Twenty, twenty Jedi who voluntarily left the order. Dooku left the Jedi Order after witnessing corruption in the Galactic Senate and the death of Qui-Gon Jinn.

Star Wars Episode II: Attack of the Clones
In Attack of the Clones, Dooku serves as the main antagonist.

After turning to the dark side, Dooku met up with Nute Gunray and other Separatist leaders and formed the Separatists. Afterwards, Dooku and the Separatist Council stationed themselves on the planet Geonosis, where they constructed a droid factory and began manufacturing Battle Droids to prepare for war on the Galactic Republic.

Meanwhile, Dooku hired the bounty hunter Jango Fett to assassinate Senator Padme Amidala. Dooku also captured Obi-Wan Kenobi when the Jedi council sent him to investigate the droid factory, but not before transmitting information to his padwan Anakin Skywalker of the threat.

Eventually, Anakin and Amidala arrived on Geonosis to rescue Obi-Wan, but were also captured and sentenced to be executed in the arena along with Obi-Wan. Before they could be executed by gargantuan beasts, however, Jedi master Mace Windu and a group of Jedi arrived and rescued them and they fought off the droids and the beasts and eventually killed the beasts, Dooku then becomes even more horrified when he witness Windu killing Jango. Yoda then arrived with the Republic's Clone army to combat the droids for the first time while the Separatist Council fled the planet.

After the Jedi and their Clone troopers emerged victorious over the droids and Windu killed Jango, Dooku fled on a speeder bike, but was pursued by Republic Gunships to his lair near the destroyed factory, where he confronted Obi-Wan and Anakin. Swiftly knocking out Anakin and engaging Kenobi, Despite Kenobi's best efforts, Dooku fairly easily overpowered and defeated Obi-Wan and soon enough dueled Anakin, who managed to wake up in time and save Kenobi from Dooku's attack, and although it took him more effort, soon defeated and severed Anakin's right arm. Unfortunately for Dooku, before he could kill the defeated duo, his former master and the Grandmaster of the Jedi Order, Yoda, himself personally arrived to save his defeated foes and confronted Dooku.

After a cordial greeting between Yoda and Dooku, the two battled with the Force, but Yoda quickly proved that his power and skill with the Force exceeded that of Dooku by deflecting all of Dooku's Telekenetic assault and even catching and repelling Dooku's Force Lightning with his bare hands without showing much effort and any strain, which Dooku barely deflected. After another attempt to use Force Lightning which proved to be useless against the Grandmaster, Dooku then tried to kill Yoda with his lightsaber, but Yoda proved to be the superior duelist and quickly gained the upper hand. Dooku barely escaped defeat and death at the hands of the immensely powerful and skilled Grandmaster by dislodging one of the pillars supporting his chamber and made his escape, leaving the three Jedi to die. Yoda was able to save Obi-Wan and Anakin from being crushed by force pushing the pillar out of the way, but Dooku escaped Geonosis in his Solar Sailer.

Having fled the battle, Dooku set his course for Coruscant, landing undetected on the Republic capital with his solar sailer. Arriving in the industrial part of the planet called The Works, Tyranus met with his Master inside the LiMerge Building and informed him that events were moving forward and the long-planned war had begun. Darth Sidious was pleased with what his apprentice had accomplished and that things were going according to his plan.

Star Wars: The Clone Wars Movie
In Star Wars: The Clone Wars, Dooku serves as the central antagonist.

At some point during the Clone Wars, Dooku ordered the kidnapping of Jabba the Hutt's son Rotta on planet Tatooine carried out by his assassin Asajj Ventress and Ziro the Hutt, Jabba's uncle, in an attempt to frame the Jedi and forge an alliance with the hutts. The attempt was successful and Dooku arrived on Tatooine to lie to Jabba about the Jedi kidnapping his son.

However, Anakin, now a Jedi knight with a cybernetic right arm, and his Padawan, Ahsoka Tano, were able to rescue Rotta and escape Teth while Obi-Wan stayed behind and defeated Ventress. Dooku was later informed that Anakin and Ahsoka were heading for Tatooine with Rotta and ordered his magnaguards to shoot their ship down. After they successfully shot down their ship, Dooku left to confront Anakin while his magnaguards fought Ahsoka.

When Dooku found Anakin, he ordered the hero to surrender Rotta to him or die, but Anakin revealed Rotta was with Ahsoka, sparking a duel between the two. During the fight, Dooku revealed to Anakin about Ahsoka's conflict with the magnaguards. In response, Anakin knocked Dooku onto the sand and stole his speeder bike to save Ahsoka. After destroying the droids, Anakin and Ahsoka returned Rotta to Jabba and told the truth about Dooku and Jabba allied with the Republic as thanks, foiling Dooku's scheme. However, Dooku had escaped from Tatooine while Anakin returned Rotta to his father and Ziro was arrested.

Star Wars: The Clone Wars Series
Later, Dooku sent Ventress to Toydaria in hopes of allying King Kantuunko with the Separatists. When Kantuunko decided to join the Republic, Dooku ordered Ventress to kill the king, but was foiled by Yoda, and Ventress escaped Toydaria.

Later, Dooku assisted his cyborg right hand servant General Grievous on board his warship the Malevolence, which possessed a powerful ion cannon that could destroy entire Republic fleets. As time went by, Grievous destroyed many Republic fleets and many warships, most notably the Triumphant during the battle of Abregado which had impressed Dooku. Later, Dooku ordered Grievous to attack a Republic medical station in the Kaliida Nebula. Grievous attacked, but during the battle, the ion cannon was badly damaged just as Republic reinforcements arrived to destroy the Malevolence. Dooku informed Grievous via hologram that Senator Amidala was heading for the sector and if Grievous could capture her, the clones would have to retreat, giving enough time for the Malevolence to escape.

Grievous captured the senator, but a Jedi invasion forced Grievous to flee. The Malevolence was destroyed when it crashed into a nearby moon, but Grievous escaped in his starfighter, and Amidala was rescued by Anakin, much to Dooku's frustration. Later, Dooku was informed of Viceroy Nute Gunray's capture on the planet Rodia. In response, Dooku sent Ventress to attack the Tranquility, which was the ship Gunray was incarcerated on and was heading to Coruscant, and rescue Gunray.

When Ventress and a group of battle droids infiltrated the Tranquility and fought the Jedi Luminara Unduli and Anakin's padawan Ahsoka Tano on board the ship, Dooku sent a signal to senate commando Faro Argyus, whom he bribed, to liberate Gunray. Ventress was able to evade the Jedi and escaped with Gunray and Argyus.

After their escape, Argyus was killed by Ventress when he tried to discredit her. Later, Dooku contacted Grievous, demanding more dead Jedi and clones. To set up a test for his second-in-command, Dooku used a Republic tracking beacon to trick the Jedi into thinking Gunray was on the third moon of Vassek and lure them into Grievous's fortress. Jedi Kit Fisto and Nadhar Vebb intercepted the signal and headed for Vassek with a small group of clones and made their way into the fortress. When they figured out Gunray wasn't there, Dooku appeared to the search team via hologram and offered them an "alternative prize".

Later, Dooku contacted Grievous again and Grievous informed him that he killed all the clones and Vebb, but Fisto defeated him and escaped to Coruscant, to which Dooku replied that there was "room for improvement". Later, the Republic tracked Dooku down and Anakin and Obi-Wan infiltrated his frigate and cornered him as Republic troops arrived, but Dooku fell through an escape hatch before Anakin could capture him. Anakin went after him through the hatch, but Dooku delayed him with his force lightning. When Dooku reached the hangar, he boarded his solar sailer and escaped, but was pursued by Anakin and Obi-Wan using a stolen Separatist ship.

The Jedi opened fire on the Count and shot Dooku down, forcing him to crashland on the planet Vanqor. Dooku attached a tracking beacon to his ship and escaped into the caves just as Anakin and Obi-Wan landed on the surface to capture him. Anakin destroyed the beacon and went with Obi-Wan into the caves. Dooku caused a cave-in with the force that trapped the Jedi and stole Anakin's lightsaber. After escaping the caves, Dooku came across a gang of Weequay pirates led by Hondo Ohnaka.

Dooku asked Hondo to take him to a civilized planet. Hondo and his gang took Dooku with them to their headquarters on the planet Florrum. Upon arrival, the pirates captured Dooku and disarmed him. Later, Hondo contacted Chancellor Palpatine and informed him of Dooku's capture and was holding him for ransom. He offered 1,000,000 credits in spice in exchange for Dooku. Palpatine sent Anakin and Obi-Wan to Florrum to confirm Dooku was indeed being held by the pirates. They found Dooku in a holding cell who warned them not to trust the pirates, but they did not listen and were captured by the pirates who were wanting to triple their pay. Meanhile, Senator Kharrus, Representative Jar Jar Binks, and a group of clones led by commander Stone arrived in Florrum to pay the pirates. Dooku, Anakin, and Obi-Wan escaped three times, but were recaptured and imprisoned. Later, Anakin and Obi-Wan were taken to Hondo for electrical torture. Later, during a power outage caused by Jar Jar crashing a tank into a power field, Dooku killed the pirate guarding his cell and escaped.

After retrieving his lightsaber, Dooku made his way to the hangar and force choked Hondo's second-in-command, Turk Falso, to death, but not before forcing him to kill his partner Barb Mentir with his blaster. Dooku then stole their ship and ultimately escaped Florrum as Anakin and Obi-Wan were rescued by Jar Jar and Stone. Later, Dooku gave general Lok Durd permission to construct the weapon called the Defoliator. Durd demonstrated the Defoliator's capabilities: it could incinerate organic life and leave battle droids unharmed. Dooku was impressed when the first test was successful, but knew Durd only created the Defoliator to get a promotion. Dooku then instructed Durd to use the Defoliator on the Lurmen inhabitants of the isolated planet Maridun, so they could see how the Defoliator effected living creatures. Unfortunately, the attempt failed as a small group of clones and Jedi defended the Lurmen and Anakin destroyed the Defoliator and captured Durd.

Later, Separatist leader Wat Tambor invaded and successfully took control of the planet Ryloth. Dooku gave Tambor strict orders to prevent the Republic from interfering with their control. However, the Republic arrived and broke through the Separatist blockade and proceeded to deploy clones and Jedi to the surface to liberate Ryloth from Tambor's control. Dooku ordered Tambor to steal every valuable resource from the capital city Lessu and escape Ryloth before the Republic arrives. TA-175, Tambor's tactical droid, kept in contact with Dooku against Tambor's orders. Later, clone troopers led by Jedi general Mace Windu and the Twi'lek freedom fighters led by Cham Syndulla attacked Lessu to capture Tambor.

However, unknown to Tambor, Dooku planned to bomb Lessu whether Tambor had fled or not and TA-175 betrayed Tambor and fled in Tambor's vessel, leaving Tambor behind to be captured by Windu. Meanwhile, Dooku's plan to bomb Lessu ultimately failed as Anakin and Ahsoka shot down the bombers before they could drop the bombs. Later, Dooku forged an alliance with a Mandalorian terrorist organization known as Death Watch, led by Pre Vizsla, whose goal was to take over the planet Mandalore and defeat the pacifist government called the New Mandalorians, led by Duchess Satine Kryze. Dooku urged Vizsla to give the Republic a reason to send military prescence to Mandalore, which Dooku believed would inspire revolution. However, despite multiple assassination attempts, Satine proved her case to the senate and caused them to call off the occupation of Mandalore, despite the actions of an assassin sent by Dooku and Vizsla to kill her.

When a frustrated Vizsla promised to attack Mandalore, Dooku told him to hold off his attack as he would likely end up ruling Mandalore for one day and that there were other ways to accomplish Death Watch's goal to conquer Mandalore. Later, the Galactic Senate refused to de-regulate the banks and Techno Union officials contacted Dooku, suggesting he bring the war to Coruscant's doorstep. In response, Dooku ordered Grievous to snd Demolition droids undercover to Coruscant to sabotage the capital. Meanwhile, on planet Raxus, Dooku publicly supported a peace treaty between the Republic and the Separatists. However, Dooku still planned to prolong the war. Grievous's successful sabotage of Coruscant prolonged Dooku's plans. After the attack, Dooku was informed that senator Mina Bonteri had been responsible for the peace treaty and ordered his agents to kill her, and Dooku later contacted the Republic and lied to them about a Republic attack on Raxus to cover up Bonteri's death, but was blown by spies.

Later, Dooku hired two bounty hunters, Robonino and Chata Hyoki, to kill any senators voting against their new bill. The duo managed to injure or kill twenty senators, but were arrested after an attempt on Amidala and Bail Organa's lives and the bill was vetoed. Later, in his lair on planet Serreno, he was informed by his Master of Ventress's growing power and Dooku decided to eliminate her. He ordered his droids to destroy their command ship, where Ventress was fighting Anakin and Obi-Wan. Anakin and Obi-Wan escaped while Ventress was seemingly killed. Unknown to Dooku, Ventress survived and escaped to planet Dathomir where she enlisted aid from the Nightsisters. Later, Ventress and two Nightsisters turned invisible and used Jedi lightsabers to attempt to assassinate Dooku, who fought them. Dooku eventually defeated the Nightsisters and used Force lightning to send them off a cliff, which they survived. Dooku believed the Jedi were responsible for the attack and contacted Mother Talzin who informed him that she would find a replacement for Ventress. Later, Dooku traveled to Dathomir to discuss with Talzin.

She mentioned Darth Maul, who Dooku knew had died on Naboo at the hands of Obi-Wan. Later, the Nightsisters presented a Nightbrother with enhanced dark Force abilities named Savage Opress to Dooku and he took Opress to Serreno to be his new apprentice. On Serreno, Dooku gave Opress his first task: attack a sancuary on planet Devaron, which he carried out successfully. After informing Dooku of his success, Dooku congratulated him and promised one day they will rule the galaxy together. After training, Dooku sent Opress to Toydaria to capture King Kantuunko. Despite resistance from Anakin and Obi-Wan, Opress successfully captured the king, but killed him in an escape attempt. When Opress returned to Dooku with the deceased king, Dooku got very angry and shocked Opress with lightning, causing Opress to beg for forgiveness. Dooku said that forgiveness is not the way od the Dark Side and continued electrocuting him.

During the punishment, Ventress revealed herself to Dooku and reminded Opress that he is her servant. Despite his best efforts, Opress was no match for Dooku's Force lightning. Ventress angrily ordered Opress to continue, but he refused and attacked Ventress, giving Dooku time to flee. He soon confronted Ventress again, but she failed to defeat him and escaped in an escape pod, but not before blinding Dooku for the time being.

Later, Dooku was informed of Jedi general Even Piell's capture and imprisonment in a Separatist prison called the Citadel on the planet Lola Sayu and figured out he had information on the Nexus Routes which could change the tide of the war. Because of this, Dooku pressured the sadistic warden of the Citadel and Separatist operative, Osi Sobeck, to interrogate Piell and his men about the Nexus Routes. Later, a group of Jedi and clones led by Anakin, Ahsoka, and Obi-Wan infiltrated the Citadel frozen in carbonite, but their cover was blown when one of the clones accidentally triggered an electro-mine and was killed.

Despite his best efforts, the Jedi evaded Sobeck's traps and successfully rescued Piell and his head naval officer Wilhuff Tarkin and many others. Dooku was furious and contacted Sobeck and ordered him to recapture Piell and his naval officers and capture the rescue squad, but Sobeck assured him that everything was under control and ended transmission and proceeded to prevent the Jedi from escaping with Piell by destroying a Separatist ship and killed a clone named Echo, ho sacrificed himself to destroy the droids, but the Jedi and the surviving clones and naval officers fled to the caves below to contact the Republic for assistance. At the same time, Dooku attempted to contact Sobeck again, but Sobeck ignored him to cut off the Jedi's escape.

Eventually, Dooku was able to contact Sobeck, who informed the warden of the significance of the Jedi's capture, to which Sobeck swore to accomplish, but Dooku reminded him that Sobeck's promises to capture the Jedi were the only things that were keeping him alive. Although Sobeck sent Anoobas to track the Jedi and successfully killed Piell, Sobck ultimately failed to stop the Jedi from escaping the Citadel with the Nexus Route information and was killed by Ahsoka and the Jedi, clones, and the naval officers escaped. Later, Dooku sent Separatist operative Riff Tamson to assassinate Yos Kolina, the king of planet Dac, to disrupt tensions between the planet's two native species: the Mon Calamari and the Quarren, which Tamson carried out successfully and relations between the two races declined and the Quarren allied with the Separatists, while the Republic backed the Mon Calamari and sent an army of clones and Jedi to quell the tensions, but Tamson attacked the Mon Calamari on Dooku's orders and attempted to kill Prince Lee-Char, son of the deceased Yos Kolina, but the Republic forces drove him back and retreated.

Dooku contacted Tamson and ordered him to unleash the Hydroid Medusas on the Mon Calamari, which he did successfully and captured many Mon Calamari and clones and killed several others. After this, Dooku contacted Tamson and ordered him to kill Lee-Char. However, the Republic destroyed the Separatist signal tower and sent a distress signal to Naboo and the Gungan army came to their aid, but Tamson was able to capture the Jedi and a majority of Gungans, but Lee-Char was able to elude him with Ahsoka.

Later, When Dooku contacted Tamson and Nossor Ri, Ri questioned the outcome of the defeat of the Mon Calamari, but Dooku responded that Tamson had sent his own troops to help. However, Lee-Char was able to liberate his people and the clones and Jedi freed themselves and Lee-Char convinced the Quarren are only being used by the Separatists to further their goals. Lee-Char then confronted Tamson himself and threw an explosive knife at Tamson, killing him and foiling the Separatists once again. Later, Dooku traveled to Naboo. While there, he ordered his agent Minister Rish Loo to hypnotize the leader of the Gungans, Boss Lyonie, to rallying the gungans against Naboo, but was foiled by Anakin and Lyoni was knocked out while Rish escaped. Later, representative Jar Jar Binks disguised as Lyonie put the attack on Theed, Naboo's capital, on hold and Rish escaped on a speeder bike pursued by Anakin. Later, Dooku was informed of Grievous's capture and planned a trap for Anakin and contacted Rish to lure Anakin to his location.

When Rish lead Anakin to Dooku, Dooku killed Rish and fought Anakin. During the fight, Dooku activated MagnaGuards to help him. Anakin destroyed the Magnaguards, but Dooku defeated the hero and captured him. He later contacted Amidala and told her if she would release Grievous, he would return Anakin in exchange. Amidala accepted the Count's request and released Grievous and in turn, Dooku released Anakin and the Separatists left Naboo. Later, Dooku met up with the Zygerrian race, who were allied with the Separatists from the beginning and were seeking to rebuild their slave empire after it was destroyed by the Jedi years before the war.

Later, Dooku and the Zygerrians traveled to planet Kiros and made an agreement with the Togrutan colonists to protect them for the rest of the war, and Dooku promised the colonists a "temporary safe haven" until the war had ended. The Separatists then proceeded to abduct all of the colonists and board them on Zygerrian slave ships which carried the colonists to slavery on the planet Zygerria where the Zygerrian queen Miraj Scintel was planning a royal slave auction. Dooku left a Zygerrian slaver and Separatist operative Darts D'Nar in charge of his droids on Kiros. D'Nar proceeded to plant bombs across the village and linked the final two together so one would go off if the other was tampered with. Later, Republic forces arrived to rescue the colonists to no avail, but they easily defeated most of D'Nar's droids, prompting him to contact Obi-Wan to agree on terms of surrender. While negotiating surrender with Obi-Wan, Dooku ordered D'Nar to kill Obi-Wan and ended transmission. Obi, Wan narrowly subdued D'Nar while Anakin and Ahsoka disabled the bombs.

D'Nar then proceeded to flee in his ship to Zygerria, but one of the ship's engines was disabled by Anakin and Anakin and Ahsoka captured D'Nar and forced him to reveal the location of the colonists. Later, Dooku was informed that Anakin, Obi-Wan, and clone commander Rex infiltrated Zygerria disguised as Zygerrian slavers and Ahsoka was disguised as a slave. Anakin kept Scintel occupied while Rx and Obi-Wan attempted to free the colonists, but were captured. Ahsoka was captured as well, but Scintel kept Anakin as her servant while Obi-Wan, Rex, and the colonists were relocated to planet Kadavo. After being informed of this, Dooku traveled to Zygerria to speak with Scintel. Once there, Scintel told Dooku that she kept Anakin alive because she believed him to be a valuable servant and revealed that Obi-Wan would soon realize that he could no longer help the colonists and cause his spirit to sink into servitude and told Dooku about the advantage of having an army of enslaved Jedi at his command.

However, Dooku revealed to the queen that he has no desire to enslave Jedi, but execute them and ordered her to summon Anakin and kill him, but she refused and Prime Minister Antai Motec betrayed her and Dooku force choked her before Anakin intervened using a shock whip, but was no match for Dooku and escaped from the palace with a dying Scintel to regroup with a freed Ahsoka. Later, Dooku contacted keeper Arguss stationed on Kadavo and ordered the execution of Obi-Wan and ended transmission just as Anakin, Ahsoka, and Republic reinforcements arrived.

During the battle, Dooku's plans to enslave the colonists failed and the colonists were freed by Ahsoka and Rex killed Arguss and Anakin and Obi-Wan and the rest of the Republic escaped just as the facility exploded. Later, Dooku told Separatist operative and criminal mastermind Moralo Eval to orchestrate a plan to kidnap and kill Chancellor Palpatine on Coruscant. During the plan, Eval hired the bounty hunter Cad Bane to help him carry out his plan. Eventually, Republic forces tracked down and captured Eval and incarcerated him, but Palpatine and the Republic believed that the attempt on his life was still in effect.

Bane was also incarcerated some time later. In response, the Jedi council had Obi-Wan disguised as the assassin Rako Hardeen to infiltrate the prison where Eval was being held in hopes of getting information on Eval's plans. After gaining their trust, Obi-Wan, Bane, and Eval escaped from prison and fled to Nal Hutta, where they acquired a ship and new weapons and contacted Dooku, who was frustrated that Eval was late to the meeting on Serreno. Eval told Dooku he would be running late and ended transmission. Eventually, Eval, Bane, and Obi-Wan escaped Nal Hutta and were briefly pursued by Anakin and Ahsoka, who were unaware of Obi-Wan's undercover mission, but the trio lost them. After landing on Serrano, Dooku greeted the trio and ordered Eval to prepare the box, a training facility Eval invented to test a group of eleven bounty hunters to kidnap and assassinate Palpatine. As the tests went on, Dooku questioned Eval about Hardeen and was growing suspicious, to which he replied that he "killed" Obi-Wan. In the end, Bane, Obi-Wan, and three other bounty hunters survived and Dooku selected Bane as the leader of the bounty hunters.

The next day, Dooku briefed the bounty hunters on their mission and gave them holographic devices to disguise themselves as senate commandos. After the briefing, Dooku, who was still suspicious about Hardeen, suggested he keep a close eye on him, which the bounty hunter agreed to do. Obi-Wan was given orders to snipe the chancellor. Later, Palpatine arrived on Naboo for the ceremony of light. After Obi-Wan gave the signal to Windu to alert him of the bounty hunter's presence, Bane and his men attacked and Obi-Wan began assisting Windu and Anakin by sniping the bounty hunters, but Bane and Eval succeeded in taking Palpatine hostage and fled in a speeder heading for the rendezvous point where Dooku would meet them, though Obi-Wan pursued in a speeder. Upon arrival, Bane and Eval noticed Dooku was absent. Instead, Dooku took advantage of the chaos and slipped a comlink in Obi-Wan's sniper blaster's case to listen in on Obi-Wan and eventually discovered that Rako Hardeen was Obi-Wan in disguise.

Meanwhile, Obi-Wan revealed himself to Bane and Eval and rescued Palpatine, leaving the infuriated duo to be arrested by Windu and Anakin. After the failed attempt on Palpatine's life, Dooku awaited Palpatine and Anakin in the palace's dining room accompanied by two magnaguards, which shocked the Jedi and the chancellor. Anakin ordered Palpatine to run, which he did, but a third magnaguard blocked the entrance to the dining room, preventing the chancellor's escape and Dooku fought Anakin. Eventually, Anakin destroyed the magnaguards and drove Dooku into the corridor, where Anakin slowly gained the upper hand, but Dooku used his force lightning to shock Anakin for the time being, but Obi-Wan(still disguised as Rako Hardeen), intervened to help Anakin. Anakin, with Obi-Wan's help, successfully overpowered and defeated Dooku, but Dooku hopped aboard his waiting Solar Sailer and ultimately escaped Naboo. Later, rebels on the Separatist-occupied plantet Onderon began to strike back against their tyrannical king, Sanjay Rash. After the rebels, led by Steela and her brother Saw, attacked the capital city Iziz with help from Republic troops led by Anakin, Obi-Wan, and Ahsoka, Rash contacted Dooku, requesting assistance. Dooku agreed not only to send more droids, but to send General Kalani to lead them.

It was later revealed that his involvement in the origins of the Clone War stretched much deeper. With new evidence into the death of Sifo-Dyas, the Jedi who supposedly ordered the creation of the clone army, Obi-Wan Kenobi and Anakin Skywalker visited the Pyke Syndicate on Oba Diah. They learned that the Pykes were hired by a man named Tyranus to kill the Jedi, but that the crime family had secretly kept his companion, Silman, alive. Obi-Wan and Anakin began to speak to the captive, but he was quickly Force choked by an unseen attacker: Count Dooku had arrived, sent by Darth Sidious to tie up all loose ends to the death of Sifo-Dyas. Lom, leader of the Pykes, called Dooku by his Sith name, revealing to the Jedi the unsettling truth behind the mystery of the clone army. Dooku, or Darth Tyranus, escaped, and the Jedi had no choice but to continue playing the Sith’s game.

Star Wars Episode III: Revenge of the Sith
"I sense great fear in you, Skywalker! You have hate! You have anger! But you don't use them!"

- Count Dooku's last words to Anakin Skywalker in Revenge of the Sith, just prior to his death.

Near the end of the war, the Republic gained the upper hand over the Separatists. Eventually, Grievous was able to capture Palpatine successfully near the end of the war, which impressed Dooku. Some time after Palpatine's kidnapping, Dooku launched an attack on Coruscant with intentions to take over the capital and destroy the Republic and rule the galaxy once and for all. Upon arrival, a huge battle between Dooku's fleet and the Republic fleet protecting Coruscant began. Later, Dooku sensed Anakin and Obi-Wan had boarded the ship to rescue Palpatine and Dooku left Grievous in charge of the bridge and left to confront the jedi.

Eventually, Dooku found Anakin and Obi-Wan in the room where Palpatine was held and told them not to "make a mess in front of the chancellor". Obi-Wan vowed that Dooku would not escape this time and the duo fought Dooku. During the fight, Anakin revealed that his powers doubled since their last battle, to which an overconfident Dooku replied that with "twice the pride, double the fall", and continued the fight.

Eventually, Dooku overpowered Obi-Wan and Force pushed him into the wall, knocking him unconscious and forcing Anakin to carry on the fight alone. When Dooku taunted Anakin about Obi-Wan's possible death and telling Anakin that he has sense great fear in him and that he has both anger and hate, but he can't use them, Anakin grew enraged and attacked Dooku with great ferocity, eventually severing both of the Sith Lord's hands.

Anakin then grabbed Dooku's lightsaber and held both his and Dooku's lightsaber at Dooku's throat. Palpatine encouraged Anakin to kill Dooku on the spot; Anakin initially hesitated, as it was not the Jedi way, but Palpatine firmly insisted. With nothing more to be said, Anakin decapitated Dooku, finally ending the tyrant's life.

After Dooku's corpse fell to the ground, Anakin almost immediately expressed regret over his un-Jedi-like action, but Palpatine assured and congratulated Anakin, stating that Dooku was too dangerous to be kept alive and Palpatine told Anakin that Dooku severed his arm and he wanted revenge, including the loss of his mother and the sand people who killed her before Anakin, Obi-Wan and Palpatine tried to escape.

Powers

 * The Force: Despite his old age, Dooku was extremely powerful and had an extremely strong connection to the Force. Although he was not quite as powerful as Anakin Skywalker at his peak, Dooku was still one of the most powerful Force-users in the history of the galaxy; arrogantly claiming himself to have been more powerful than any single Jedi of his time. Despite this claim, Dooku's Force potential did not come anywhere close to surpassing Yoda and Palpatine's powers respectively at the two latters' peaks.
 * Telekinesis: Dooku was very proficient in Telekinesis and utilized it either as offensive or defense.
 * Force Push: Dooku utilized Force Push to send his opponents flying through the air, causing them serious injury or temporarily incapacitating them/knocked them unconscious.
 * Force Flight: Dooku utilized Force Flight to levitate himself or to slow-down his fall to the ground.
 * Force Choke: Dooku utilized Force Choke to either weaken, kill or intimidate his opponents.
 * Force Grip: Dooku utilized Force Grip to lifted his opponents off the ground, sometimes by the neck, to immobilize or throw them. His abilities also allowed him to influence the movements of people, as he was able to force the pirate Turk Falso to shoot his comrade while simultaneously choking him, while he performed a similar feat when he made Padme Amidala aim at and shoot Bec Lawise.
 * Force Deflection: Dooku utilized Force deflection to redirect incoming attacks, such as Force lightning, with or without his lightsaber, though it was difficult to do so.
 * Mind Trick: Dooku utilized Mind Trick to control the minds of other sentient beings. However, it did not work on individuals who have very strong wills.
 * Taming Beasts: Dooku utilized Taming Beasts to control the minds of other animals.
 * Force Lightning: Dooku utilized Force Lightning to torture or kill his opponents.
 * Force Dash: Dooku utilized Force Dash to move at amazing speeds.
 * Force Jump: Dooku utilized Force Jump to jump or leap at great distances.

Abilities

 * Lightsaber Skills: Despite his old age, Dooku was extremely skilled in lightsaber combat and an extremely gifted duelist. He was one of the few known individuals who could fight Yoda as an equal. Dooku was one of the greatest lightsaber duelists in the history of the galaxy.
 * Form II: Dooku was a master of Makashi; he used it exclusively and was believed by many the most proficient practitioner of the style.
 * Dun Möch: Dooku was extremely skilled in Dun Möch.
 * Genius-Level Intellect/Master Tactician/Leader: Dooku was highly intelligent and wise; his intelligence and wisdom was surpassed only by Yoda, Palpatine, and Anakin Skywalker respectively. As a Sith General, Dooku was a highly skilled tactician and a very capable leader.

Trivia

 * Each villain in the Star Wars prequels foreshadows a different aspect of what Anakin will become. In Dooku's case, it's the fallen Jedi who loses his arms during battle.
 * The scene in Revenge of the Sith where Palpatine orders Anakin to kill Dooku mirrors the scene in Return of The Jedi, the last film in the original trilogy, where he pressures Anakin's own son Luke to kill Anakin, (who is now Darth Vader).
 * Palpatine mentioned Dooku in the LEGO Star Wars: Droid Tales episode that retells the story of Return of The Jedi right where Luke is about to destroy Vader. Probably a reference to the previous point.
 * Dooku also appeared in countless Lego Star Wars sets from 2002-2013, as well as appearing in the lego Star Wars games.
 * His original actor's Lord of The Rings co-star Andy Serkis would later play Supreme Leader Snoke in the Star Wars Sequel trilogy.
 * Just before Dooku gets killed in Revenge of the Sith, Dooku had mentioned to Anakin that he has both anger and hate, which foreshadows Anakin's transformation into Darth Vader and Anakin killing his wife, Padme in anger.

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