Donatello, Leonardo and others in “Unfinished Business”

Leo, it's not that bad. You blew up the Kraang ship.

[dejected] But I also blew our chance to get Karai on our side.

Look, she's Shredder's daughter! His blood! She was never gonna be on our side!

Yeah, maybe you're right. Maybe I just was believing what I wanted to.

I've been there, dude. For me, it was leprechauns.

Are you seriously comparing what I am going through to the time you found out leprechauns aren't real?

Leprechauns aren't real!?