Some TMNT stuff really isn't for little kids.
Bebop was a street punk-cum-mutant warrior under Shredder's employ. As the series progressed, the animal side of Bebop and Rocksteady surfaced as they dreamt and longed for the 'old days' when they were just animals in the wild (despite having previously been humans). When the Shredder and his bunch were defeated by the turtles in the 'Final Conflict' (issue #13), Bebop and Rocksteady were banished to an Eden World, a huge paradise planet in Dimension X full of wilderness and natural wildlife, without any humans or similar to disrupt their peace, and they enjoyed it. They became less interested in evil as their intelligence increased.
In issues #23-#25, Krang, who was banished to the toxic waste dump planet Morbus for exiled criminals, befriended two other criminals, Slash and Bellybomb. The group stole a spaceship and headed to Earth but stopped at the same Eden World Bebop and Rocksteady happened to be on. Being bored of Paradise, Bebop and Rocksteady join them on the trip back to Earth. However, rather than battle the turtles, the pair left Krang and the villains to fight the turtles and wandered the streets of New York City on their own. They robbed a clothing store to get clothes similar to their original attire. They then rob a gun store for some guns. Then they went to the zoo and blasted all the cages, setting all the animals free. Just as the turtles managed to defeat Krang (who had taken over Shredder's body), Bebop and Rocksteady arrived with guns and all the zoo animals, intending to take them back to the same Eden World. The turtles surrendered and let Bebop and Rocksteady escape in the spaceship with the animals. Leonardo asked them to take the defeated Krang and Bellybomb with them back to Morbus in Dimension X (Slash had already left the scene and was wandering the city). Bebop and Rocksteady did as asked and bid the turtles farewell. The final panel of #25 shows the two mutants removing their clothes and going back to their simple life together in the wilds of their Eden World.
This version had a cameo appearance in All Tomorrow's Yesterdays.
Teenage Mutant Ninja Turtles 30th Anniversary Special
Rocksteady and Bebop reappeared in the mini-comic "Paper or Plastic?" where they wanted to obtain some snacks from the grocery store. Leonardo had to use the money Splinter gave him in order to pay for them after Rocksteady and Bebop left.
- During the actual Archie run, his human form was depicted as Caucasian in his first appearance. This was corrected in the Mirage and IDW reprints.
- Pastiches of Bebop and Rocksteady can be seen in issue #29 of Sonic Universe, in prison with the evil version of Sonic, Scourge.