Baxter Stockman has a brown head with white goggles, a black mustache and an angry expression with teeth bared. He wears a silver flight helmet and silver armour piece first used for the Ninja from Ninjago. His torso is white with a light purple shirt and white armour. His torso also features brown suspender and a brown and grey supply belt. Stockman's legs are blue and depict jeans.
The turtles first spotted Stockman trying to break into a building. They then fought him and threw him in a dumpster. After Michelangelo accidentally left his "T-Pod," an advanced music player made by Donatello, Stockman found it and used it to advance his armor. He used his new suit to attack a business place he got fired from. The turtles later heard about this on their television and decided to investigate. They then found Stockman and were barely able to fight him. The armour's left hand turned into a Mouser when it was taken off. Donny noticed how the T-Pod was evolving to Stockman, who Michelangelo nicknamed "Stockman Pod". The turtles then went to fight the Stockman Pod again, this time winning by throwing a bee hive at Stockman's exposed head, and destroyed the T-Pod.
Later, Stockman used his Mousers to attack Leonardo and Raphael (The "A" Team), while Donatello and Michelangelo (the B Team) took on a lone Dogpound. The B Team was easily crushed, while the A Team creatively got rid of the Mousers, only for more to come out, because of a special spray Stockman put on them. Raphael was able to defeat him by opening his spray with a shuriken and spraying Stockman and Dogpound. When Dogpound brought him to the Shredder, Stockman was forced to become a member of the Foot Clan and create Fishface's breathing aperatus and robotic legs, which he had problems with because of his fear of the Shredder, but mainly because he couldn't work the right neural interface to allow Fishface to control his own legs until Karai brought him a Kraang droid to reverse-engineer.
Later, he traps the turtles, Dogpound and Fishface into a deadly labyrinth, to get rid of both the turtles who defeated him and the allies who bullied him. The six mutants work together and defeat Stockman, who escapes again.
- His armour is the same as the Ninjago ZX armour.
- This is the first minifigure to have a flight helmet in silver.