I'm sorry for the ones who don't like or just don't watch TMNT Nichelodeon, but when I watched one of the last episodes 'Tale of the Yokai' (many thanks to KameChuu who told me where I could find them) I was just shrieking like the silliest fangirl of ever! The turtles were in Japan and had fun pretending to be Yokai to scare the evil ninjas. They really were well playing that role!
Experimenting with shading to give a night effect. I edited a bit the characters position to show all of them.

I don't own TMNT, just my art!