The second season of TMNT doesn’t offer any innovation over the first one, instead it takes the monster-of-the-week formula even further by making the turtles lose countless mutagen containers all over the city in the first episode. Subsequent episodes see various humans or other living things transformed and the turtles are forced to deal with it. Various predictable shenanigans with transformations happen, though most of them are actually pretty cool and I have to applaud the creators of the show for remaining constantly inventive with these transformations and also for being able to tell all kinds of great stories, from tragic to comic (pizza face is probably my favorite episode of the season) and everything in between.
The season ends with another fight with the Krang and while the overall quality of the writing remains just as high as the first season and there are lots of developments (new friends and foes), it feels a bit like treading water. But as long as the show manages to keep the same level of quality, I don’t mind too much.