Mondo Metal

Mondo Metal is issue 18 of the TMNT Adventures, and was published in March 1991.

Storyline
The turtles return to New York City, discovering a teenage rock band named Merciless Slaughter practicing in Shredder's former hideout. Exposure to mutagen, a guy named Mondo is mutated into a humanoid gecko, Mondo Gecko, who takes down Shredder's foot robot.