Unicycle-like robots, created by The Shredder/Krang, that first appeared in the original 1987 Teenage Mutant Ninja Turtles (TMNT) cartoon series, specifically the episode Enter The Shredder. In said chapter, Roadkill Rodneys were used to capture a rhinoceros and warthog from a local zoo (these would subsequently be used to create the mutants Bebop and Rocksteady), fought the TMNT inside the Technodrome (failing miserably), and later rescued Bebop and Rocksteady (after the TMNT imprisoned the bumbling duo in a zoo cage) at the end of the show. They never appeared in the cartoon again. However, later, they did pop up in the Archie TMNT comic books and as enemy characters in several of Konami's TMNT video games.

Despite their relatively small size, Roadkill Rodneys are fully loaded with numerous hidden gadgets and weaponry. A diamond-tipped drill can be extended from the top of their heads--this is primarily used to tunnel through rock, allowing the robots to travel underground. Housed in the shoulders of these machines are long, retractable, prehensile cables. Roadkill Rodneys most often utilize these appendages to capture/restrain targets, but they can also be employed to manipulate objects in their immediate environment (door handles, buttons, etc). More alarmingly, they can channel direct current electricity through these tentacles, stunning, inflicting pain, or, in the most extreme circumstances, killing their captives. The panel on a Roadkill Rodney's lower body can drop down to reveal a laser blaster mounted on an articulated armature. This gun fires energy beams powerful enough to melt steel.