There really are too many universes. Right now it's looking like U3, U4, and U10 are filler status. There just around as cannon fodder for the known characters to pad their stats and get a little shine. I'll give U9 a pass because they at least built up the wolf brothers and gave them a somewhat honorable send off. And of course we'll find out about U2 next week.
He don't really fukk with them like that, breh. He was off meditating on a distant planet before the tournament while his squad was getting their Avengers on. He just tolerates them to an extent. When all the scrubs and distractions are out the way, he'll fight.
Plus he probably ain't down with all their posing and talking. It's like going to work and your boss and co-workers are always planning get-togethers and team building activities, and all you trying to do is get shyt done, get paid, and go home.