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Nesbitt, known in Japan as Soichiro Ota, is one of the Big Five and an antagonist in Yu-Gi-Oh!. He's the technical expert of the Big Five and arguably the most significant of them, as he is the only one who succeeds in stealing a body. He is also described by some as being a nerd. His hair is Brown.

He was voiced by Hiromi Sugino in Japanese and David Wills in English.


Nesbitt owned his own lab where he built war machines that he built for his boss, Gozaburo Kaiba. When Seto Kaiba took over (in which the Big Five joined forces with him), he burned down Nesbitt's lab, as Seto wanted to make games at Kaiba Corp rather than machines for war.

After they joined forces with Pegasus J. Crawford to take over Kaiba Corp and Pegasus was defeated by Yugi Muto, Seto fired the Big Five, but they trapped him in a virtual world. Nesbitt controlled the fire head, but when their Five Headed Dragon was destroyed, they were imprisoned in the virtual world instead.

Their bodies were destroyed eventually but they soon found Noah Kaiba in his virtual world and worked for him to steal the bodies of Yugi and the gang. Taking the form of Machine Sergeant (Robotic Knight in the English dub), Nesbitt targeted Serenity, who was with Tristan Taylor and Duke Devlin, but eventually decided on dueling the three of them at once, though he seemed intent at defeating Serenity first (likely because she has never dueled before, despite Tristan's lack of experience). Despite the fact that it was three-on-one, with Tristan and Serenity as the least experienced of the four, Nesbitt gained the advantage. He destroyed Tristan's deck master while aiming for Serenity's monster, sending Tristan falling into a molten pit, trapping his mind in a robot monkey and holding his body in a virtual chamber.

Nesbitt entered the field himself during the duel and immediately fused with Machine King into Perfect Machine King. He was defeated when he and Serenity's fusion monster, Saint Joan, destroyed each other, but he won Tristan's body and after a confrontation with Kaiba and Tristan, kidnapped Mokuba Kaiba, who was then taken from him by Noah.

Afterward, Gansley, Crump, Johnson and Lector entered Honda's body and all five of them dueled Yugi and Joey at once. Nesbitt took over for one turn but fell victim to Yugi's trap after which Lector took over. After the Big Five were defeated, Noah imprisoned them each in a different corner of the virtual world.

Noah imprisoning the Big Five.

Nesbitt was killed along with Noah, Gozaburo and the other members of the Big Five when Noah used a satellite attack to destroy the fortress that the virtual world was stationed in, deleting it and everyone inside it. He was later seen in season 4 flashbacks when Alister mentions Kaiba's stepfather kidnapping his parents and brother though whether Nesbitt was real or another illusion is in question with Dartz revealing he kidnapped Alister's parents and brother disguised as Gozaburo.


Nesbitt is obsessed with robots. While in the form of a robot in the virtual world, he would often talk like one, using terms such as "negative" and "disassemble" and referring to Serenity only as "the female".


  • Initially, Nesbitt stood out the least of the Big Five, being mostly out of sight once they were no longer shadowed and having only two lines in Season one and none in Season three up til his duel with Tristan, Serenity and Duke. Ironically, Nesbitt played the biggest role as he was the only one who was successful in stealing a body, though this excluded him from when the other four chased Joey, Serenity and Duke.
  • In Season four, Nesbitt is seen is flashbacks with "Gozaburo", which means this may have just been another illusion.


           Yu-Gi-Oh logo.pngVillains

Dark Yugi | Shadi | Seto Kaiba | Mokuba Kaiba | Yami Bakura | Maximillion Pegasus | Croquet | Pegasus' Guards | Duke Devlin | Marik Ishtar | Yami Marik | Odion Ishtar | Mr. Ishtar | Weevil Underwood | Rex Raptor | Paradox Brothers | Bandit Keith | Sid | Bonz | Zygor | Panik | Gozaburo Kaiba | Thief King Bakura | Jinzo | Diabound | Zorc Necrophades
Rare Hunters
Arkana | Strings | Seeker | Lumis and Umbra
Big Five
Gansley | Crump | Johnson | Nesbitt | Lector

Television Only
Yu-Gi-Oh! Duel Monsters
Noah Kaiba | Zigfried von Schroeder | Leon von Shroider | Imitator of Death | Witty Phantom
Dartz | Rafael | Alister | Valon | Gurimo | The Great Leviathan
Yu-Gi-Oh! GX
Vellian Crowler | Jean-Louis Bonaparte | Pierre the Gambler | Zane Truesdale | Society of Light | The Light Brigade | Alien of Light | Wheeler's Doctor | Wheeler | Lorenzo | Howard X Miller | Bob Banter | Battle Footballer | Axel Brodie | Gravekeeper's Chief | Aster Phoenix | Chazz Princeton | Jagger Princeton | Slade Princeton | Lucien Grimley | Grim Reaper | Mr. Stein | Marcel Bonaparte | Martin Empire | Blaze | Frost | Thunder | T-Bone | Dr. Eisenstein | Princess Rose | Prince Ojin | Brron | Zure | Duel Ghouls | Scarr | Goblin Elite Attack Force | Kozaky | Chaos Sorcerer | Mr. Shroud | Trueman | Dark World Army | Mad Dog | Makoto Inotsume | Sartorius Kumar | Sarina Kumar | The D | Light of Destruction | Thelonious Viper | Trapper | Adrian Gecko | Echo | Yubel | Supreme King | Guardian Baou | Skilled Dark Magician & Skilled White Magician | Three Masked Knights | Jinzo | Sacred Beasts | Franz | Mike | Yusuke Fujiwara | Sky Scout | Skull Knight
Shadow Riders
Kagemaru | Nightshroud | Camula | Tania | Don Zaloog and The Dark Scorpions | Abidos the Third | Titan | Amnael
Yu-Gi-Oh! 5D's
Rex Goodwin | Roman Goodwin | King of the Netherworld | Kalin Kessler | Devack | Greiger | Sayer | Professor Frank | Mr. Armstrong | Z-one | Don Piero | Lester, Primo, and Jakob | Lazar | Aporia | Rudolph Heitmann | Carly Carmine | Misty Tredwell | Lawton | Barbara | Malcolm | Radley | Earthbound Immortals
Dark Signers
Rex Goodwin | Roman Goodwin | Devack | Greiger | Kalin Kessler | Misty Tredwell | Carly Carmine
Z-one | Aporia (Lester, Primo, & Jakob) | Paradox | Antinomy
Yu-Gi-Oh! Zexal
Don Thousand | Dr. Faker | Mr. Heartland | Number 96 | Quattro | Nistro | Vetrix | Triad of Terror (Wolfsbane, Coyote, Jackal) | Scorch | Chills | Parker | Quinton | Trey | Erazor | Chironex | Scritch
Seven Barian Emperors
Vector | Reginald Kastle/Nash | Rio Kastle/Marin | Alito | Mizar | Dumon | Girag
Yu-Gi-Oh! Arc-V
Leo Akaba | The Doktor | Barrett | Silvio Sawatari | Yuri | Jean-Michel Roget | Sergey Volkov | Lucas Swank | Z-ARC
Yu-Gi-Oh! Vrains
Varis | Specter | Dr. Kogami | Faust | Baira | Dr. Genome | Pandor | Queen | Shepherd | Bohman | Harlin | Lightning | Windy | Roboppy | Ai
The Knights of Hanoi
Varis | Specter | Dr. Kogami | Faust | Baira | Dr. Genome | Pandor
Aileen Rao | Kekeru Goyu | Tetsu Trudge

Anubis | Paradox | Diva

Manga Only
Mr. Karita | Yako Tenma | Mr. Clown | Ahmet | Tragoedia | Luna | Leo

Card Games
The Lswarm | The Construct | Tierra | Trishula, Dragon of the Ice Barrier

Video Games
Scott Irvine