Talk:List of Rise of the Teenage Mutant Ninja Turtles episodes/@comment-26923473-20190111141316/@comment-36587160-20190111151333

I think it was around s3 for B&R and Mondo Gecko (Mona Lisa did show up in s4). Also, if I want to be technical about it, Rocksteady showed up as a human in Season 1, and Bebop showed up (again, as a human) in Season 2.