Azumarill probably too cause it holding choice band plus huge power= Death. Not to mention it being fairy type.
With this he was uu in a generation with drizzle everywhere. Now he is fairy but drizzle will no longer be dominant, so that's not worth banning. Belly drum aqua jet is now what makes him dangerous, but not enouth for uber. If he gets hit hard on the switch he can forget belly drum, and with little hazzard other priority will kill him after belly drum. And other priority users are faster than him. So, strong: yes. Worth banning: no.