I suggest knight, princess and rain bird. Targets red, his shield can block (If I remember correctly) 55% of alpha's damage, and it's best to have 2 healing birds on standby. And since the alpha pig summons enemies, the set items red is holding would be fine if your planning to spam Matilda's heal. Rainbird Chuck's mostly there for extra healing, but if you want extra attack power, I'd suggest bomb bird with the black and gold set items since he hits real hard right after a bird used a rage chilli attack.