Dr. Baxter Stockman (voiced by Scott Williams) is a mad scientist who serves as one of Shredder's minions. He went from human, to cyborg, to brain, to clone.
- Dr. Baxter Stockman will become Jeffrey and Jaden's enemy in Jeffrey, Jaden & Friends' Storm Adventures of Teenage Mutant Ninja Turtles.
- Stockman will challenge Jeffrey in a genius contest in Battle of the Brains.
- Stockman will guest star in Jeffrey's Secret Experiment Part 1.
- Stockman will guest star in Jeffrey, Jaden & Friends enter The Black Hole.
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