Some TMNT stuff was always meant for grownups.
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.
- 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.