He's been..different ever since the kraangs invasion. Sure he saved the world but he's serious.. no more shitty one liners.. no more pun.. nothing. I mean he stopped completely..this worried his brothers so they went to his room, and he was gone.

So they sent you to go find him as they had something to do with a mission. You found him on a roof top of a tall building.. crying? He had his dual ōdachi laying on the cement ground as he sat by the edge