Some TMNT stuff was always meant for grownups.

Gizmo Sprocket
Biographical information

Outer Space


Space Adventurer

Physical description




Eye color


Out of universe information

Mirage, Archie


Chance Enterprises
Mirage Studios

First appearance

Gizmo vol.1

Created by

Michael Dooney

Teachers and Students
Gizmo Sprocket, a robot with a cool attitude, is a character created by Michael Dooney for his Gizmo comic book series. His best friend and partner is Fluffy Brockleton, an anthropomorpic dog. They are accompanied by Soto, a sentient, pan-dimensional space vehicle that resembles to a trailer truck.

Involvement with TMNT

Gizmo has seen limited interaction with TMNT characters. A two-issue mini-series was produced in 1989 called Gizmo and the Fugitoid, which was written by Dooney and Peter Laird. Fugitoid himself was a crossover element to the TMNT with from his own story in Gobbledygook. The Gizmo and the Fugitoid story takes place following Fugitoid's story arc in Eastman and Laird's Teenage Mutant Ninja Turtles volume 1.

Gizmo was later seen in as a cameo in the audience, along with Fluffy, of a Stump Wrestling match during Teenage Mutant Ninja Turtles Adventures.

Will Tupper's short story Credo shows Gizmo and Fluffy amongst a group of the Turtles' friends, although they had never been shown to have met the Turtles in a previous story.


  • Michael Dooney made a few sketches of a Gizmo action figure for the Playmates TMNT toyline, but the toy was never produced.
    • Dooney also created an evil twin for Gizmo, something not seen in the comics.


Gizmo Sprocket/Gallery

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