Baxter Stockman
Biographical information

Earth, Stocktronics, New York City


African American

Date of birth

December 31, 1967


Super intelligence

Weapon(s) of choice

Mouser Robots, Insane Intellect, Robotic Suit, Various other weapons and technology of his own design.


Scientist, Head of Stocktronics Corporation

Physical description

Human, Cyborg, Disembodied brain


5'10" (human)


165 lbs (human)



Eye color

Brown, white

Out of universe information
First appearance
Created by
Voiced by
Teachers and Students
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Similar to the Mirage comics, Baxter Stockman, voiced by Scott Williams, was an African-American scientist who had hidden motives for working on his mousers in the 2003 TV series. While he sold them off as a means to rid the city of the rat problem, he was actually using them to rob banks while under the Utrom Shredder's employment and now with the Foot Clan.


When his employee April O'Neil discovered his plans, he sent the Mousers after her, saying that she knows too much. With the help of the TMNT, she escaped and returned to Stocktronics Corporation to defeat him. The Turtles and April finally corner Stockman, who recalls his Mousers and then retreats. To defeat the Mousers, April is forced to type in a command that causes them to overload. The resultant explosions destroy the lab and building. As the building went down, Stockman was taken by Hun to see Shredder. The price for his failure was his left eye which Hun removed.

Stockman would then use the information he got from studying an Utrom Exosuit the Foot found to create the invisible Foot Tech Ninjas, in an attempt to defeat the Turtles. Stockman later captures Raphael, with the help of Foot Tech Ninjas. Hun interrogates Raphael, but allows him to escape to allow the Foot Tech Ninjas to follow Raphael back to the Turtles' lair.

The Turtles successfully fend off the cloaked ninjas with the aid of Donnie's heat-sensing goggles. When that plan failed he was carried off by the Foot Tech Ninja, Stockman was injured by Hun to the point that he was in a wheelchair with a neck brace and missing his left hand, which is replaced with a robotic prosthesis. Stockman is in a severely debilitated state at this point, but he still works for the Shredder hoping to gain access to the Utrom exosuit.

When the Shredder had his vengeance against the Turtles (Shredder Strikes Back arc), he wanted proof positive that the Turtles had died. He sent Baxter to get proof that the Turtles died but threatens Stockman with a "final punishment" if he doesn't come back with conclusive evidence. Stockman performs a survey of the antique store, but finds no human or mutant DNA.

Distraught at this finding, Stockman made his own proof (creating a replica of Raphael's mask) and gave it to Oroku Saki in exchange for the Utrom exosuit to study. Convinced that the Turtles are dead, Saki gives him access to the exosuit.

Having been subjected to harsh punishments by the Shredder on more than one occasion, Stockman quickly develops an animosity for the Shredder and Hun. With newfound and unfettered access to the Utrom exosuit, he planned to use the suit to create something that would give him more power. When the TMNT returned to New York and took revenge on the Utrom Shredder, he used the surprise attack by the Turtles as an opportunity to launch his own plan of revenge against the Utrom Shredder.

Stockman broke in, using a giant four-armed robot, and attacked the Shredder's throne room and battles the Utrom Shredder, Hun and the Turtles. The Turtles and Shredder had to temporarily work together to defeat the mad scientist. Despite being a near indomitable foe, Stockman is defeated and seemingly explodes in the night sky.

Later, Stockman would be reduced to a head on a spider robot body that was voice activated by Shredder. He is controlled remotely by the Shredder with a robot eye implant that covers up his previous wound that shocks Stockman when he disobeys his orders or becomes arrogant. Using him to sneak inside the T.C.R.I. building, the secret hideaway of the Utroms, the Shredder had Stockman tamper with the virtual reality program the Utroms were using to explain their origins to the Turtles, so that if they died in VR, they would die for real.

Stockman shut down the security of the base, and led the Shredder and his minions to an underground path that allowed them to enter the building unseen. Once the TMNT broke free, Donatello had Fugitoid, an ally of the Turtles, imitate Shredder's voice to release Baxter from his control. Now free, Stockman attacked the warlord, whom he still held a grudge against, and in part contributed to the Shredder's defeat and the discovery that he was actually an Utrom. After this incident, Stockman escaped and disappeared.

With the Shredder's defeat, Stockman set his head in an Utrom Exosuit chest cavity, protected by a glass jar, and tried to trick Leatherhead for his own evil schemes. Working independently, Stockman befriends Leatherhead and helps the crocodile build a transmat device in exchange for help with his robotic body, and the Turtlebot, a robot created to fight the Turtles. Stockman's Robot is completed but Stockman's ruse is revealed when Leatherhead finds out that the scientist used to work for the Shredder. Stockman's Turtlebot was destroyed, but he escaped. By this time, Stockman no longer had the financial backing and material support of the Foot.

Later with his head now on the shoulders of the Utrom exo-suit work and the chest cavity covered up, he worked with the mob in an attempt to rid the city of the Foot and the Purple Dragons, and win the gang war. With the Shredder gone, a turf war developed, and Stockman creates robots to get rid of the Foot and the Purple Dragons. Stockman's robots are destroyed and he survives the turf war.

Hun would later somehow find Stockman again and reduce him to just a brain connected to an eyeball and spinal column in a stasis tube, and once again put him under the Shredder's command. Ch'rell did quote upon seeing Stockman's current appearance that he "should've quit while he was a head." The tank housing his brain allows him to speak, hear, and communicate with other foot techs, but it is also equipped a volume button, and electrical shocking device, which Hun and the Shredder use to torture the scientist.

Baxter reduced to a brain in a stasis tube.

This form of coercion was used to get Stockman to create a group of Foot Mechs (robotic soldiers). The Foot Mechs are eventually destroyed along with the Utrom Shredder's Freighter Headquarters. Stockman's tank rises from the water after Karai rescues the Shredder before sinking to the bottom of the ocean.

He eventually gets fished out of the water and continues to work under the Foot. Still a brain in a tank, Stockman has upgrades added to his tank, which include a modified self-propulsion system, a crude robotic arm, and a 360° hologram of his head. Despite an enmity shared between Stockman and the Shredder and the likelihood that Stockman will turn on him, Ch'rell keeps him around because he considers him to be useful.

This attitude begins to change when, because of Stockman's failed attempts, a new scientist named Dr. Chaplin was introduced, Chaplin considers Stockman to be a role model and would build Stockman a new robot body that would project a hologram image of his head. While Chaplin admired his work and looked up to him, Stockman was always trying to get rid of him due to threats by Ch'rell about making Chaplin a permanent replacement as the new head engineer of the Foot.

Stockman even goes as far as sabotaging Chaplin's inventions so that the younger scientist's success would not negatively affect him. Not one for gratitude, Stockman continues to plot against Chaplin, but his attempts backfire and only boost the junior scientist's worth in Ch'rell's eyes. Stockman tries to sabotage Hun's mission to rescue Karai in Hun on the Run, but he soon becomes a contact within the Foot for Agent Bishop.

Eventually, Stockman would double-cross the Shredder one last time. A significant act of sabotage is seen when Stockman places a program that locks the controls of Ch'rell's starship in "Exodus, Part 1." When the ship is finally destroyed, and believing his enemies to have finally died, he now worked alongside Bishop and joined the Earth Protection Force in exchange for a new body.

For the time being, Stockman upgraded his robotic body with four legs and four arms. Despite being an expert in robotics and engineering, Bishop changes Stockman's role and has him create clone aliens controlled by remote control in Aliens Among Us. The genetic material from these aliens inadvertently leads to a mutant outbreak. Stockman, who had been promised the tools he would need to create a new human body, is told that he is unable work on his new body until the outbreak is neutralized. Stockman is then sent to New York in "Outbreak" to contain the threat.

Despite working with EPF forces to contain the outbreak, Stockman is unsuccessful. Although Stockman is told that he is unable to work on his body, he divides his time between creating a new body and the outbreak. Bishop warns Stockman that he should not go through with the process, given the outbreak he caused. Stockman disregards Bishop's warnings and goes through with a cerebral transfer into his new human body in "Insane in the Membrane".

Stockman finally made a new human body for himself but in his impatience, his work was rushed. Once his consciousness had been transplanted, the new body seems fine at first. But it suddenly started to decay rapidly and in his desperation to halt the process, Stockman ended up losing his mind, which leads to the scientist having visions of his late mother.

In his insanity, he decided that all of this had begun when April sent the Turtles after him, so he sought to kill her. Stockman heads on a lone mission to seek revenge on April. In the end, Stockman's delusions of his mother made him save his former assistant instead, and he apparently fell to his death into the East River. Not being done with Stockman's work, however, Bishop found and revived his brain.

Bishop has Stockman's body recovered and his brain placed in a new cyborg body. However, when the scientist is brought back to life, he is outraged that he wasn't left to rest in peace. Under Bishop, Stockman is forced to work on a cure for the outbreak. He never figures out the cure as Leatherhead discovers it in "Good Genes".

After the outbreak is neutralized, Stockman and Bishop inadvertently destroy the Heart of Tengu, an artifact that used to control the Foot Mystics. This act sets off a chain of events leading to the return of the original Shredder.

In an alternate future, where Ch'rell ruled Earth, Stockman's brain was attached to an aged, wheelchair-bound Hun. They worked with Donatello (who had been stranded in this dystopia by the Ultimate Ninja and Drako), the Turtles resident in that alternate reality, and April in an attempt to overthrow the Shredder. When they went to face him for the final showdown, Hun begged Ch'rell to take him back. Ch'rell, now using a giant-sized exosuit, stomped both Stockman and Hun flat.

The Lost Episodes

Main article: The Lost Episodes
Stockman reappears in the fifth, "Lost" season of the series, still under Earth Protection Force employ. During his first appearance of the season, in the episode "Membership Drive," Stockman has programmed his cyborg body to reflect a hologram of his human body over him. He attempts to reprogram the reactivated Nano (found during a fortuitous E.P.F. salvage operation), with disastrous results (When Nano escaped, Bishop commented that he was beginning to understand why his former employer kept relieving him of body parts). Later, in the two-part season finale, he forms part of the turtles' offensive against a resurrected demon Shredder. In these episodes. he has a tank-like body. At the end of the final Lost Episode, his robot body was almost completely destroyed in the final battle with the Tengu Shredder's dragon form and what was left of it was carried away by Bishop's soldiers with his holographic head saying resignedly "It seems the pain will never end".

Back to the Sewer

In the 5th episode Hacking Stockman, when the Turtles return to the past, they learn that Stockman had constructed himself a cyborg body with a face matching his organic one (minus the glasses) and struck an alliance with Hun and the Purple Dragons to hack the Foot's database to find treasure vaults so the Dragons can conduct raids against them. However, the Cyber Shredder (an engrammatic copy of the Utrom Shredder) tracked the hacking to its source and took over the scientist's body through cyberspace using metals around him to create a makeshift Shredder appearance. Stockman ejects his head which grows spider legs to avoid being used as cannon fodder. He allies with the Turtles (excluding Don) to help him stop the Shredder. He uses a circuit board to link with his body and contacts Don (who is in cyberspace) to disrupt the Shredder's control over his body by uploading a firewall.

Mayhem From Mutant Island webisodes

Stockman has created an army of mutated Dinosaurs and uses them to challenge the Turtles whom eventually defeat them all.

Fast Forward

In the episode Head of State, it was revealed what has happened to Baxter in the 100 years that passed since the Turtles last saw him. 50 years ago, Agent Bishop ordered Baxter to build "organic Mousers" using alien DNA, to protect Earth. However an accident caused a cave-in, and while a captive alien rescued Bishop (and made him turn over a new leaf) Stockman was lost, presumed dead. In reality, he survived, spending decades combining his DNA with that of his organic Mousers, and blaming Bishop for abandoning him, wanting revenge. As a fitting punishment for leaving him as a brain without a body for so long, Baxter plans to transplant his brain into Bishop's body. He sent his Mousers to capture Bishop, who became the president. While the other Turtles fight the Mousers, Leo tries to stop him, by announcing the good Bishop has done over the years. Leo brings up how aliens can co-exist with humans now and how the turtles can interact with them, meaning even Stockman can live a normal life in his current state. Stockman feels guilt at hearing this before the lair collapses, however this time Bishop refuses to leave Stockman behind and saves Stockman. At his office, Bishop explains that given how much science has advanced, creating a new body for Stockman will be simple, and while Baxter is suspicious assuming he will be enslaved to toil for him once again, he is, however, rather surprised to hear the Ministry of Agriculture is interested in his work and discoveries.


This version of Baxter Stockman is extremely arrogant and narcissistic, constantly bragging about his vast intellect and scientific accomplishments. While his narcissism isn't unwarranted as he is undoubtedly a scientific genius, it also leads him to be overconfident. For example in Return to New York Part 3, he ensured that his cyborg armor had backup power sources for each part of it, in case his main power source was compromised. However, because he bragged about it, this allowed Donatello to use Stockman's own severed robotic arm against him, resulting in his defeat.

Despite his intelligence, Stockman also shows signs of mental instability, with his own former employee April O'Neil referring to him as "nuts". While he appeared to like April to some extent, calling her "so brilliant yet so naïve", he didn't hesitate to command his mousers to kill her when she found out about his criminal activities, claiming that he had "trust issues". These trust issues were probably one of the reasons Stockman has almost no friends, along with his madness, narcissism and sense of vengeance. The only relationship Stockman has which could qualify as friendship is his partnership with John Bishop.

Stockman has a habit of cheating death but as time went on, he began to wish that when he died, he could stay dead. When Bishop found and revived him, Stockman expressed the desire to be allowed to rest in peace and maintains this desire at least until the end of the Lost Season. Despite his suicidal desires, Stockman's extraordinary ability to cheat death kept him alive for an entire century after the battle with the demon Shredder.

Stockman is also very vengeful and constantly works to kill ANYONE who interferes with his plans. He has been an enemy of all the main characters, heroes and villains alike, at some point in the series and frequently switches allegiances. Even Bishop, the only real friend Stockman is shown to have throughout the entire series, was subjected to Stockman's wrath until Leonardo managed to persuade the mad scientist that Bishop had changed and therefore Stockman could change too. Despite his madness and vengeful nature, Stockman seems to value Bishop's friendship and eventually decides to turn over a new leaf.