At some point prior to the episode "Repo Mantis", the person who would become Repo Mantis was presumably bitten by an Oozesquito and turned into a mutant praying mantis. Interestingly, his mutation did not seem to affect his life or business, as he still manages to find work and operate his salvage yard.
He encountered Donatello and Michelangelo when the two Turtles were going through wrecked cars in his salvage yard. They were immediately enamored by the Jupiter Jim Moon Buggy that he had obtained, but they did not have the funds to purchase it. He offered them a deal: if they repossessed a recreational vehicle in another mutant's possession, he would give them the Moon Buggy.
However, he reneged on the deal upon their return, having decided that the Moon Buggy was too valuable to sell because Jupiter Jim fans would pay to be photographed in the vehicle. When the Turtles angrily confronted him, Repo physically attacked Donnie, but was immobilized by Mikey using a large electromagnet, enabling the brothers to abscond with the Moon Buggy. Upon freeing himself, Repo climbed into his tow truck and chased the two Turtles through the streets of New York. During the climax of their vehicular skirmish, Repo was zapped by the Moon Buggy's bug zapper.
Repo Mantis is a mutant praying mantis with bright purple skin, long arms with jagged shoulders and forearms, and two antennae on his head. He also has bright green eyes, black hair with a grey streak (styled in a pompadour comb-over), and jagged teeth. Repo Mantis wears a white tank top, a dark blue vest, and a black belt with spikes and a "V" engraved on its buckle.
- “I’m about to repo your lives.”- The Evil League of Mutants
- Donatello: Repo Mantis offered Donatello the Jupiter Jim Moon Buggy in exchange for some repo work, but reneged on the deal. Donatello responded by taking the Moon Buggy, which Repo Mantis chased through the streets.
- Michelangelo: Michelangelo trapped Repo Mantis with his own electromagnet, and used the Moon Buggy's weapons against the mutant mantis when he pursued the Turtles.