This is the story of Dr. Ivo Robotnik from the Sonic Cinematic Universe.
Early life[]
Due to the death of his parents and his own grandfather being imprisoned, Dr. Ivo Gerald Robotnik grew up as an orphan, which caused the aspiring genius to heavily begrudge the concept of friends and family. As a boy, during his school days, young Ivo got punched in the face by a local bully, humiliating him. Robotnik achieved revenge through technological means, causing his hated young tormentor to spend a year, as Robotnik claims, eating his meals through a straw.
In 2011, he went to a movie theater, and hate-watched Green Lantern.
At some point, Robotnik became an agent working for the United States government, where he allegedly helped them to stop several coups in the Middle East, including one in Pakistan and an uprising in Azerbaijanistan, with his revolutionary drone technology. Having inherited Gerald's intelligence, he also earned five PhD's thanks to his high intelligence quotient. However, most US government officials actually disliked Robotnik, due to his personality and ego, even though Vice Chairman Walters was the one who tolerated him the most.
Sonic the Hedgehog[]
Robotnik as he introduces himself to Major Bennington.
Dr. Robotnik makes his first appearance at the baseball field in the peaceful American town of Green Hills, Montana, where a blue extraterrestrial hedgehog named Sonic accidentally unleashed a burst of energy that caused a massive power outage. He arrives at the scene in a heavily modified truck with his assistant, Agent Stone. And then, he proceeds to harass and belittle the military personnel there before dispatching an army of egg-shaped drones called Badniks to locate the source of the energy surge. One of the Badniks discovers Sonic's footprints and Robotnik uses his computer to analyze them. He determines Sonic's exact height, weight, and spinal structure and discovers that no other organism in the animal kingdom matches Sonic's body shape. Realizing that Sonic must be an alien, Robotnik decides to find and capture the hedgehog and obtain his power for himself.
This leads Robotnik to the house of Sheriff Tom Wachowski, where he attempts to trick Tom into letting him into the house by claiming he is from the power company. When Tom doesn't fall for it, Robotnik forces his way into Tom's house and tries to compel him to reveal where Sonic is hiding. Tom tries to play dumb, but Robotnik is wise to the ruse. He notices one of Sonic's quills stuck in Tom's dinner table and becomes much more impatient, angrily demanding that Tom cooperate. And then, he said that he'll give him five seconds to tell him where Sonic is or he'll kill him with his Badnik. Meanwhile, some mini Badniks infiltrate the attic, where Sonic is hiding. When Sonic freaks out and rolls into the kitchen, he exposed himself to Robotnik. And then, Tom punches Robotnik in the face. One of Robotnik's Badniks sees this and goes into attack mode, but Sonic and Tom work together to destroy it.
After they escape, Agent Stone enters the house to check on Robotnik, only to be berated by Robotnik for not apprehending Tom and Sonic. Occupying the Green Hills Sheriff's Department, Robotnik and his agents personally overheard a conversation between Tom and Wade Whipple when the former called him. Growing impatient, Robotnik snatched the phone from Wade and told Tom of how he had gotten on his bad side. As Robotnik threatened Tom however, Tom hung up. Leaving Wade behind, Robotnik traced Tom's last known location to the Piston Pit, where he and Agent Stone managed to successfully interrogate the Roadhouse Thug who had met Sonic and Tom earlier. while they are on the road, Robotnik catches up to Tom and Sonic in his truck and he dispatches an Egg-Tank to destroy them. The duo fights back, which proves difficult since the car has several smaller Badniks hidden inside that activate after the original vehicle is destroyed. They eventually manage to destroy the whole thing, much to Robotnik's dismay, but an explosive device from the car leaves Sonic critically injured.
Meanwhile, Robotnik turns to the quill he found at Tom's house, using his technology to analyze and extract the quill's power. Through this process, Robotnik discovers that the quill has unlimited power and realizes he could use this power to take over the world. Thankfully, Sonic recovers after being examined by Tom's veterinarian wife, Maddie, but the friends are still not safe from Robotnik. When the trio heads over to San Francisco to retrieve Sonic's rings from the top of the Transamerica Pyramid tower, Robotnik confronts them in an upgraded aircraft called the Egg-Pod accompanied by an army of Badniks. Mocking the egg-shaped design of the drones, Sonic calls Robotnik "Eggman", and he challenges him to a fight.
As Dr. Robotnik readies his weapons, Tom frantically reminds Sonic that he and Maddie are completely defenseless against the evil genius. So, Sonic comes up with a plan and pushes the couple off the building. Robotnik is shocked by this, but quickly downplays it by claiming that he was expecting to not expect something. He and his Badniks go to attack Sonic, but the latter slows down time, so that he can disarm the drones. He then goes to use one of his rings to warp Tom and Maddie to safety. But at this point, the Egg-Pod has tapped into the power of the quill, allowing the aircraft to travel at the same speed as Sonic as Robotnik tries to hit him with lasers.
Sonic is able to send Tom and Maddie back to Green Hills, but he has trouble shaking off Robotnik. He travels all over the world using his rings, but Robotnik's super-powered aircraft is right behind him at every turn. Eventually, Sonic and Robotnik return to Green Hills, where Robotnik lands a hit and knocks Sonic out.
As Robotnik celebrates his presumed victory, Tom, Maddie, and the other residents of Green Hills confront him, with Wade Whipple and Crazy Carl telling him to leave Tom and Sonic alone. Meanwhile, Sonic, who surprisingly survived the earlier attack, wakes up and gathers all kf his strength to smash the Egg-Pod, causing Robotnik to lose his temper. Tom then uses one of Sonic's rings to open a portal to a world filled entirely with mushrooms, aptly named the "Mushroom Planet." In a rage, Robotnik charges at Sonic, but the force of Sonic's hit severely damages the Egg-Pod, sending it crashing through the ring portal with Robotnik still inside. As a result, Robotnik is stuck on the Mushroom Planet, leading to his defeat.
Robotnik gaining his iconic bald head and bushy mustache and revealed to still have one of Sonic's quills, intending to return home to Earth and get revenge on Sonic.
A few days later, Tom and Maddie receive a visit from Commander Walters, who thanks them for eliminating Robotnik, and dismisses the latter as someone who never existed. And then, Walters assures Tom and Maddie that they will not face any consequences for their involvement in Robotnik's disappearance. Meanwhile, on the Mushroom Planet, Robotnik is revealed to have developed his iconic bald head and bushy mustache, having completely lost his sanity after being stranded on the alien world for months. He navigates the bizarre landscape, still in possession of Sonic's quill, which is now supercharged. Aware that he is alone on an uninhabited planet with no resources, no supplies, and no way home, Robotnik vows to return to Earth by Christmas to exact his revenge.
Sonic Dash[]
In promotion of the film, Dr. Robotnik makes an (unseen) appearance in his Prototype hovercraft jet as a boss in Sonic Dash while retaining Mike Pollock's voice, just like his video game counterpart.
Sonic the Hedgehog 2: The Official Movie Pre-Quill[]
Robotnik serves as the overarching antagonist of the comic, being mentioned and/or appearing in three of the five stories. In "Hedgehog Day Afternoon", a gang of bank robbers (led by Lindsey and Jason) attack a bank in Walla Walla, Washington, stealing one of Robotnik's control gloves and a USB drive containing Robotnik's manifesto from a safe deposit box. Sonic arrives in Walla Walla to thwart the robbery, only to be knocked out by Lindsey and trapped in the bank vault--Lindsey then contacts the bank robbers' mysterious employer, who sends some of Robotnik's Badniks to collect the entire vault. Sonic manages to escape and defeats the robbers, while one of the Badniks steals Robotnik's control glove from Lindsey and flees. The Badnik returns the control glove and USB drive to the robbers' employer, revealed to be Agent Stone.
In "The Secret of my Distress", Stone begins reading up on Robotnik's manifesto from the stolen USB drive. In the manifesto, Robotnik declares that, while Stone is a "know-nothing", he is far more intelligent than other humans and provides Stone with both his philosophy and a detailed contingency plan for how to control the people of America and continue his legacy. Following Robotnik's guidance, Stone integrates himself into society by taking up a job at Karen's Coffee, a coffee shop in Green Hills, and gradually disposes of his coworkers until he is able to usurp control of the business. With this completed, Stone moves on to the second part of the manifesto.
In "Mushroom With a View", Robotnik appears as the main protagonist. Still trapped on the Mushroom Planet, he continues his plans to return to Earth, swearing to prove his superior intellect to Sonic and all of humanity. After discovering an edible blue mushroom. Robotnik begins collecting them to sustain himself long enough to rebuild his Egg-Pod, finding a cave full of them. However, as he attempts to collect them, he is attacked by a group of predatory mushrooms. Despite being overwhelmed, Robotnik fights back and arrogantly dismisses the mushrooms as lower life-forms, activating a homemade flamethrower made from the remains of his aircraft to incinerate them. Escaping the burning cave, Robotnik declares that he will destroy anything that gets in his way of returning to Earth and getting revenge on Sonic.
Sonic the Hedgehog 2[]
After being stuck on the Mushroom Planet for 243 days, Robotnik would begin the daily routines he had established for himself, musing about getting revenge on Sonic, before turning his attention to his masterpiece. Having constructed an energy beacon from the parts of his Egg-Pod in hopes of producing an energy signal that would attract the attention of those off-world, Robotnik would hook Sonic's chaos energy-infused quill up to his device in order to power it. Upon doing so, however, Robotnik unleashed an energy pulse that knocked him unconscious. Hours later, some Scavengers appeared from a Ring on the Mushroom Planet and found the unconscious body of Robotnik. When they reached for Sonic's quill, however, Robotnik woke up and took the scavengers out with traps that he had set up before-handed. However, when he headed for the Ring portal in an attempt to escape the Mushroom Planet, he found his way barged by Knuckles the Echidna. When Knuckles asked where he found Sonic's quill, Robotnik told that he got it from Earth and that he would happily show him the way. The two of them would then make a deal: Knuckles would get him off the Mushroom Planet and Robotnik would show him where Sonic was.
Arriving in Green Hills during the night, Robotnik would cut off the power to the Wachowski residence where Sonic now lived. He proceeded to cut the front door open with his control glove, revealing his return to Sonic. While Sonic, surprised, stated that Robotnik made a mistake by coming to his home, Robotnik told him otherwise as he provoked Sonic with promising revenge against him, the Wachowski's, and Ozzie. As Sonic then charged at him, Robotnik stepped aside for Knuckles to take on Sonic. From there, Robotnik stood on the sidelines, watching with contentment as Sonic got pummeled by Knuckles as their fight ensued. During this, however, Robotnik heard Knuckles mention the "ultimate power", which caught his interest. Soon after though, a young fox with two tails named Miles "Tails" Prower arrived in Tom's police car and saved Sonic from Knuckles by ramming the echidna with said car. As Sonic and Tails prepared to drive away however, Robotnik jumped onto the car's hood and acted like a rabid dog, trying to gnaw and lick his way through the windshield until he got thrown off of it. After Sonic and Tails escaped, Robotnik would pursue both them and Knuckles on a riding mower, only to catch up to them in time to see Tails fly Sonic away. In order to proceed with his plans, Robotnik used his control glove to contact Agent Stone, who sent him an orbital space pod with new clothes and Badniks. Getting refitted with new clothes, equipment, and a refresher, Robotnik proclaimed that he had been "re-hatched". Finding Knuckles on the cliffside below him, Robotnik inquired Knuckles about the "ultimate power" he spoke of. Knuckles, however, told him that this power, the Master Emerald, did not concern him now that their deal was over. Insisting otherwise, Robotnik used his Badniks to help Knuckles up from the cliff and explained to him that he needed his expertise on Earth. Furthermore, he convinced Knuckles that he would help him find the Master Emerald so that he could use it to destroy Sonic. With Knuckles seeing that he was suggesting an alliance, Robotnik had them seal their deal with a handshake (which crushed his hand). Afterward, Robotnik pulled out his Egg-Mobile for him and Knuckles to travel in.
Traveling to the Mean Bean Coffee Café in Green Hills, Robotnik found Stone, now the owner of the cafe. There, Robotnik received his favorite latte from his faithful assistant, which he noted could use some mushroom due to his time on the Mushroom Planet. When Knuckles then came in and got acquainted with Stone. Robotnik ordered for the cafe to be renovated. In response, Stone activated the command center that he had secretly installed in the establishment. While there, Robotnik and Stone intercepted a text message between Sonic and Tom. As Stone took notice of Knuckles' lack of understanding of technology and asked him why they were working with an "imbecile", Robotnik told him of his plan to steal the Master Emerald, which would not only let him get revenge on Sonic, but also let him power his wildest designs, get his genius recognized across the galaxy and let him harness unimaginable forces. When Knuckles deduced from the message that Sonic was back home, Robotnik proved him wrong by tracing his call to eastern Siberia. After they then had fiddled with a hologram of Sonic, Robotnik and Knuckles headed for Siberia. As they left though, Robotnik chose to ditch Stone for now, which Knuckles called him out for being dishonorable. Robotnik, however, did not care saying that this is how he rolled.
Using the Egg-Mobile, Robotnik and Knuckles found Sonic and Tails inside an ancient owl temple in the mountains, arriving there with an army of Badniks, just as Sonic and Tails had acquired a compass that could lead them to the Master Emerald. Following some banter with Sonic, Robotnik fired a missile at Sonic with his Egg Mobile, only for Sonic to redirect it into a statue, causing the entire temple to start caving in. Sonic and Tails, however, managed to escape through an opening. As the duo then split up, Robotnik went after Tails. During the ensuing pursuit, Robotnik managed to snatch the compass when Sonic tried passing it onto Tails, before firing a pair of missiles that knocked out Tails. As an avalanche then arrived, Robotnik and Knuckles took their leave in the Egg Mobile. As they did, however, Knuckles noticed that Sonic prioritized Tails over the compass, which Robotnik regarded as a weakness. Later, using a Ring, Robotnik and Knuckles traveled to an island hundreds of miles away from Hawaii with some Badniks. There, Robotnik found a recess for the compass to fit into using his control glove. After then inserting it into the recess, a great undersea temple was revealed in front of them. Entering the temple, Robotnik and Knuckles found themselves in a great labyrinth filled to the brim with traps. After barely avoiding the first traps, which cost Robotnik most of his Badniks, Robotnik decided to work smarter by deploying some reconnaissance Badniks that he used to map out the labyrinth for them. Eventually arriving in the Master Emerald's chamber, Robotnik decided he had no further use for Knuckles as the latter proclaimed pride in their collaboration. Before he could taser Knuckles with his control glove, however, Sonic arrived in-between them and the Master Emerald. While Robotnik was disgusted by Sonic's motivation to protect those he cared for, he nonetheless began sneaking up to the Master Emerald while Sonic and Knuckles were preoccupied fighting each other. When Sonic and Knuckles finally noticed his attempt to take the Master Emerald though, Robotnik mocked the latter for his gullibility and lack of foresight as he called out Robotnik for betraying their "friendship." Robotnik ignored the fact that they were friends, to which he never planned on being friends with him to begin with, and was only using him for his own goals, he finally states that Knuckles was nothing but a mere means to an end. Grabbing the Master Emerald, Robotnik proceeded to vanish in a flash of energy.
Robotnik soon after reappeared in the Mean Bean Coffee Cafe, where Stone had been apprehended by Wade Whipple. In his elevated state of power, Robotnik adjusted himself to his new abilities as he teleported around, quickly forcing Wade to surrender while freeing Stone. Stone proceeded to warn him that G.U.N. had the cafe surrounded, but Robotnik revealed that he had a solution to this. Heading outside, Robotnik faced his former superior Commander Walters, Tom, Maddie and a squad of G.U.N. soldiers. There, Walters told Robotnik that he was finished, as the government had seized all his assets. In response, Robotnik used his newfound powers to pull in G.U.N.'s arsenal and various other machinery from the environment, which he used to build the Death Egg Robot. Putting himself in control of the giant machine, with Stone as his co-pilot, Robotnik had the Death Egg Robot trample around Green Hills, forcing G.U.N. to retreat. Soon after though, Sonic and Tails showed up in the Tornado. Though frustrated by Sonic's constant returns, Robotnik decided to shoot him down with a missile barrage. Since Stone had yet to figure out the controls though, Robotnik did it for him, inadvertently electrocuting Stone in the process. Though Sonic and Tails slipped through the barrage, he did manage to catch Sonic with one missile. Knuckles then arrived, blinded by vengeful fury at Robotnik for deceiving him and betraying his trust, but Robotnik had his Death Egg Robot's hand deal with his attack when the echidna tried attacking him head-on. Tails then tried shooting at Robotnik's Death Egg Robot with the Tornado's guns, but Stone managed to use the robot's 'Stache Masher feature to make the Tornado crash. However, Robotnik was left alone when Sonic returned with the missile and directed it into the Death Egg Robot, which shook the machine enough to knock Stone out.
After sending his Badniks after Sonic, Tails, and Knuckles, who easily dealt with them, Sonic came up to the Death Egg Robot and challenged Robotnik himself. Refusing to let Sonic get the better of him, Robotnik began following Sonic out of Green Hills. When he needed a break though, which prompted Sonic to taunt him further, Robotnik responded with his plans to enslave humanity and conquer the multiverse before opening eye lasers on Sonic. Eventually, Robotnik caught up to Sonic as he was crossing a bridge, which he blew up with the Death Egg Robot's snot rocket, sending a weakened Sonic plummeting down. As Robotnik gloated about his superiority to the grounded Sonic, however, he discovered that he was all-seeing as well, which let him notice Tails break into the Death Egg Robot's cockpit. As Tails began confusing him with holographic images of himself, Robotnik refuted the fox's attempt to outsmart him and took them all out with his powers. However, Tails soon revealed that he was actually a distraction. It was then that Robotnik discovered Knuckles nearby, who managed to punch the Master Emerald out of him. Without his powers from the emerald, Robotnik's Death Egg Robot shut down, leaving, Tails, Knuckles, and the Master Emerald to slide out of the robot. Recovering, Robotnik got to his feet and activated the Death Egg Robot's auxiliary power. Assuming control over his robot again using the manual controls as well, Robotnik had his machine walk towards a weakened Sonic as he went to retrieve the Master Emerald. Before Robotnik could step on Sonic with his Death Egg Robot's foot, however, Tom and Maddie swooped by in a truck and picked up both Sonic and the Master Emerald. In response, Robotnik had his robot topple their truck and trap them within a ring of fire.
Robotnik getting defeated for the second time as he falls to his presumed death.
As the Death Egg Robot's foot down upon the family, Robotnik thought he had killed Sonic, Tom, and Maddie. Unfortunately for him, Sonic managed to transform into Super Sonic at the last moment with the Chaos Emeralds that fell out of the crumbled Master Emerald. In this form, Sonic stopped the Death Egg Robot's stomp and cut off its head, exposing Robotnik. Seething with anger at his enemy for nearly killing his family, Sonic declared to Robotnik he had lost. As Robotnik tried talking Sonic into a truce, however, he used his control glove in an attempt to punch Sonic with the Death Egg Robot's fists. Sonic, however, easily stopped the attacks and pierced the Death Egg Robot several times before tipping it over with his foot, leaving Robotnik to fall down with it. However, when G.U.N. (alongside a disguised Agent Stone) swept the crash site, they were unable to find any trace of Robotnik. However ,while deleting him from the US database, the G.U.N. agents found a 50-year-old file buried deep in their system related to the name “Robotnik” a secret government experiment called Project Shadow.
This film marks the first time Sonic and Dr. Robotnik refer to each other by their names. However, they sometimes refer to each other as Eggman and Hedgehog, just like in the first film.
Sonic Drone Home[]
Due to his presumed death in the second film, Dr. Robotnik doesn't make an appearance in the 2022 short film, Sonic Drone Home. However, he is mentioned a few times. At the beginning of the short film, Sonic refers to Unit as one of Robotnik's drones. Later, Unit mentions Robotnik when he says that he programmed him to think for himself. When Tails accidentally ties Sonic's legs together, he tells him to try to talk to Unit, so that they can stop him from trying to kill them. And when Sonic asks Unit why he was trying to kill him, Tails, and Knuckles, Unit explains that his programming is to conquer the world. Because of this, Sonic says, "That sounds like Robotnik." Eventually, Sonic and Tails convince Unit to recite a few poems for them. And even though they become friends at the end of the short film, Knuckles still didn't trust Unit. Despite this, Sonic gives Tails permission to keep Unit.
This short film actually marks the first time Sonic doesn't refer to Dr. Robotnik as Eggman. Instead, he only refers to him by his name. And even though he referred to him as Eggman in the first two films, he also referred to him by his name in Sonic the Hedgehog 2.
Knuckles[]
Although Robotnik is missing after falling from the Death Egg Robot and is presumably dead, one of his former subordinates called The Buyer continues his legacy of world domination by assembling Robotnik's destroyed Badniks into new types of robots, machines and weapons in order to sell them in the black market and build a criminal empire. The Buyer's last scheme is to capture Knuckles and to use his powers to charge his latest mech and to do that, he hires two former G.U.N. agents named Mason and Willoughby to kidnap Knuckles and bring him to him and he even gives them some help to deal with Knuckles by giving them weapons charged with quills that belonged to Knuckles. When the two former G.U.N. agents failed in capture Knuckles, the Buyer threatened to kill them, but he decided to spare them and offer one last chance to capture Knuckles after learning that Mason and Willoughby were like him when all three were betrayed by G.U.N., which in the Buyer's case was because he was a comrade of Robotnik in the black ops team that was the precursor of G.U.N. and the government wanted to erased all traces of Robotnik and its involvement with the crazy roboticist, going so far to the point of terminate anyone who worked for Robotnik like the Buyer who survived the assassination attempt. After Mason and Willoughby failed again to capture Knuckles, the Buyer decided to take down the echidna himself with his supercharged mech in order to finish Robotnik's dream of taking over the world. But then, he was defeated and killed by Knuckles and Officer Wade after they smashed the Buyer's mech.
This TV show marks the first time Dr. Robotnik's first name, Ivo, was mentioned in the Sonic Cinematic Universe. Also, the part where Sonic says, "Robotnik's gone, and there's no new battle to fight", actually foreshadows his return in Sonic the Hedgehog 3.
Sonic the Hedgehog 3[]
Unbeknownst to G.U.N. and Team Sonic, Robotnik survived his defeat at the hands of Super Sonic and went into hiding with Agent Stone. The two used a giant Crabmeat as their mobile headquarters, allowing them to move from place to place while remaining submerged underwater. During this time, Robotnik occupied himself by watching telenovelas and binge-eating junk food, which led to his gradual weight gain.
When several of Robotnik's drones were stolen and used to attack Team Sonic and Commander Walters, Agent Stone arrived to disable them. After Walters' death, Team Sonic followed Stone back to the Crab's location, and the latter allowed them in to explain their situation.
Upon arrival, Sonic and his friends expressed their disgust at how much Robotnik had let himself go. Stone showed Robotnik footage of his drones acting without his command. Believing this to be the work of an impostor, Robotnik began tracking the energy spikes of his drones to locate the impostor's base of operations. Realizing that this impostor might also be the one who freed Shadow, Team Sonic proposed an alliance. However, Robotnik only agreed after Sonic gave him one of his quills to reinvigorate him with a burst of its chaos energy. Following this, Robotnik had Stone shave his head, fix his mustache, and later repair his suit using fabric that he had ripped from Stone's shirt. Eventually, Robotnik's tracking led them to an abandoned G.U.N. facility.
At the base, Sonic and the others are faced with three separate paths, prompting them to split up. Not wanting to let Ivo out of his sight, Sonic decides to take one of the pathways with him while Tails and Stone take another and Knuckles goes alone. Sonic and Robotnik enter a room, and Sonic realizes from the items scattered about, including a photo of Shadow and Maria, that this was an actual home where people lived and that Shadow had a family. Sonic asks Robotnik if he has ever wondered what he would be like if he had a family to keep him from turning into a villain, although the doctor rejects this idea, stating that he never had a family and believing himself to be "undesirable to all possible genders". While wondering where Sonic went, Ivo comes across several of his stolen drones, prompting him to joyfully hug them. However, he is interrupted by the appearance of his still-living grandfather, Professor Gerald Robotnik. At first, Ivo is skeptical, but after Gerald revealed that they both share the same level of intellect, he happily embraced his grandpa. Remembering his childhood as an orphan, Ivo angrily demanded to know why Gerald was absent throughout his life, to which Gerald explained his imprisonment. Gerald is about to tell Ivo why he brought him here, but Ivo retorts that he used his unparalleled intellect to track him down. Gerald counters that it was for the plan he concocted with his own unparalleled intellect, Gerald then instructed Ivo to follow him so he could fully explain his plan with Shadow.
While Gerald and Ivo were talking, Shadow captured Team Sonic and chained them to a metal pole. Upon Ivo and Gerald's arrival, Gerald revealed that he planned to take control of and activate the ultimate weapon he built for G.U.N.: the Eclipse Cannon, capable of delivering a precision strike anywhere on Earth. Following it's creation, G.U.N. had locked it away using 2 keycards; one of which was entrusted to Sonic by Commander Walters before his death. After stealing the key from Team Sonic, Gerald informed Ivo that they needed to break into G.U.N. Headquarters in London to retrieve the second key, in which Ivo agrees to join him. Summoning the Crab to the area, Ivo intimidates Sonic by sarcastically thanking him for bringing him on this adventure before leaving with his Grandfather. Aboard the Death Crab, Ivo, believing Sonic to be dead, is impressed by how quickly Gerald managed to dispose of him. Gerald, in turn, assures him that there is nothing they cannot destroy together. Stone charts a route to G.U.N. Headquarters in London, informing the Robotnik's that they will arrive in about four hours. Realizing that they are ahead of schedule, Gerald decides to take the opportunity to spend quality time with his grandson, much to Ivo's joy. Using virtual reality headsets, they enjoy a variety of recreational activities together.
Working together, the two successfully infiltrate G.U.N. Headquarters using specialized suits to disguise themselves. Upon their arrival to the keycard's vault, however, Director Rockwell, having anticipated someone would come for the second keycard, is able to subdue Ivo and Gerald, along with Sonic, via a gravity manipulation system. Knuckles arrives to rescue Sonic, Tails, Tom, and Maddie, he destroys Rockwell's control panel, causing everyone to be affected by the system, including Rockwell and her G.U.N. soldiers. Ivo attempts to grab the keycard after Rockwell dropped it, despite the increased gravity keeping him and Rockwell pinned down, but after Sonic shorts out the system with his chaos energy to protect Tom, Maddie, and Tails from being crushed by debris from Knuckles breaking into the building, Rockwell is able to recover it first, but later gives it to Tom when he appears to her disguised as Commander Walters, only to then be assaulted by Shadow, allowing Ivo and Gerald to attain both keycards. In the meantime, Agent Stone had sensed that something wasn't right, and that Gerald and Shadow were hiding something from Ivo. But when he tried to warn the doctor, Ivo ignored him and dismissed him as his lackey.
Activating the Eclipse Cannon and having it rise from its hiding place beneath the River Thames outside G.U.N. headquarters, the Robotniks launch it into space, and they have Shadow begin charging it with his chaos energy. However, it is then that Gerald reveals to Ivo that he intends to destroy the Earth in revenge for Maria's death, not rule it together with his grandson. Despite Ivo's pleas, Gerald refuses to rescind his decision, even telling Ivo that he does not compare to Maria. Realizing how mad his grandfather has become in his lust for revenge for Maria, Ivo betrays his grandfather and tries to stop him, but Gerald seems unbeatable. Worse, he revealed that, even if the Eclipse Cannon's beam is stopped, he rigged the core to go into meltdown from Shadow's built-up chaos energy, threatening to blanket the Earth in a nuclear winter from the radioactive fallout. Luckily, just as Gerald thinks that he had Ivo sucked out of the Eclipse Cannon and into space, Ivo returns, thanks to help from Tails and Knuckles, and is able to send his grandfather into the stream of Shadow's chaos energy using Super Sonic's energized quill, disintegrating him. However, with the Eclipse Cannon about to fire, Ivo, Tails, and Knuckles attempt to divert the beam away from Earth, while Super Sonic and Super Shadow try to hold it off for as long as they can. Just as Sonic's strength falters and he reverts back, they manage to divert the beam safely away from Earth, but at the cost of slicing off part of the Moon in the process. To make matters worse, the Eclipse Cannon's core had gone into meltdown, just as Gerald planned, and the whole thing was about to explode. While Knuckles and Tails go after Sonic, Ivo teams up with Shadow to move the Eclipse Cannon away from Earth and stabilize the core for as long as they can.
Robotnik's final moments before his second presumed death.
Knowing this might be the end for him, Ivo makes one last live stream broadcast to Stone, calling him his "sycophant friend", and how he'll miss his lattes with steamed Austrian goat milk that Stone always made for him, much to Stone's happiness. With the Eclipse Cannon safely out of range, thanks to Ivo stalling the core's demise and Super Shadow taking off his Limiters to give him the extra energy to push the cannon away from Earth, it then explodes, seemingly killing Shadow and Ivo in the resulting blast. Having witnessed it from back in London, Stone can only somberly say, "Goodbye, Doctor", before walking away to an unknown future.
However, in an after credits scene, Shadow is shown to have survived, having been hit by the shockwaves of the Eclipse Cannon imploding, which sent him crashing back down to Earth, where he was seen recovering one of his Limiters from where it, indicating that if he survived, Ivo might have too.
This film marks the second time Dr. Robotnik's first name, Ivo, was mentioned in the Sonic Cinematic Universe. It also marks the first time that he is referred to as Dr. Ivo Robotnik.
A Very Sonic Christmas
Just like in Sonic Drone Home, Dr. Robotnik doesn't appear in A Very Sonic Christmas. However, he was indirectly mentioned by Sonic when he said that Dr. Robotnik and Professor Gerald Robotnik were definitely on the naughty list. As a bonus, the short film's music video shows Dr. Robotnik and Gerald as snowmen.
Sonic the Hedgehog 4
Dr. Robotnik will return in Sonic the Hedgehog 4. This was confirmed by Jim Carrey when he said that he was interested in reprising his role. Jim Carrey also said that he's power-resting, which means that he's taking a break from voice acting without actually retiring. But since Dr. Robotnik was presumably killed in the third film, it's unknown if he's actually going to appear in Sonic the Hedgehog 4. However, some people did say that the film's plot will involve Sonic and his friends traveling to a different universe. If this is true, they will meet an alternate version of Dr. Robotnik.