Some TMNT stuff really isn't for little kids.
Mondo Metal is issue 18 of the TMNT Adventures, and was published in March 1991.
- Candace Fine (debut)
- Foot Soldiers
- Merciless Slaughter band members (debut)
- Mondo Gecko (debut)
- April O'Neil
The turtles return to New York City, discovering a teenage rock band named Merciless Slaughter practicing in the Shredder's former hideout. Exposed to mutagen, a guy named Mondo is mutated into a humanoid gecko, Mondo Gecko, who takes down the Shredder's Foot robot.