Mondo Gecko was in the 1980s series of Teenage Mutant Ninja Turtles. I haven't seen the episodes yet, I would have to buy the seasons on DVD. I'm only 17 and have no job, so it'll take awhile. But I read about Mondo Gecko in the wiki and I really like his appearance. I would like it if he was in the new series, not as much as I would enjoy seeing Mona Lisa though.