I haven't heard any words about my team yet, but just to let you that Isaac is more of a HP keeper/berserker once his ultra burst activates, and he still keeps his attack buffs even after ultra burst is over, which feels pretty dang OP.
Want me to replace him with Mika Returna? (10th Palette) Unless everything is fine.
He who is brave is free! - Lucius Annaeus Seneca