If, in co-op BoI, player one selects Blue Baby as their character, does player two take one soul heart upon entering instead of a red heart, or can he not play at all due to there (obviously) being no red hearts for him to "borrow"? On a side note, if P2 can take a soul heart, is P2's health upon receiving it then measured in soul hearts, or red hearts? Bit of a complex question, I know, but I honestly can't wait for the full game plus unlocking Blue Baby to know. Thanks!

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