I honestly think Uta would be that one dude who has like, six cats

The mischievous jet-black jerk: Furruta Purruta.

The orange priss: Itoreow 

The old, cruel alpha: Donato Purrpurra

The sassy, flouncy diva: Neowco

The cute little kitten: Purroma

And, of course, the giant fluffykins: Purrenji Yomo.