Some TMNT stuff really isn't for little kids.
When the mutant exterminator Scumbug fought the Teenage Mutant Ninja Turtles, he quickly found competition in the mutant flatworm now calling itself Wyrm. Wyrm proved itself to be the stronger of the two and overpowered the exterminator. However, while Wyrm was fighting Scumbug in knee-deep sewer water, they both were electrocuted by nearby power lines knocked down by their fight.
Wyrm reappeared in issue 59. When reporters Squint and McIntyre were exploring the exploded tunnels, they find a wounded Scumbag, barely clinging to life and covered in tiny Wyrms. Upon encountering new prey, the Wyrms reform back into the regular-sized mutant and advance on the reporters, while Scumbug recovers and moves to exterminate the "roaches."
As Wyrm and Scumbug chased the fleeing reporters, they encountered the Turtles fighting the alien villain Toxzeem. The two mutants decided to attack Toxzeem, but the alien simply zapped with this crystal gun, turning them into crystal statues.
Wyrmm was planned to re-appear in the Forever War storyline before the comic's cancellation.