Yin and yang are two characters in the same body, they can blink separately, they can both feel pain no matter which half gets hit, they can each control whichever limb they want, but if they both want to control the same limb, an all-out fight ensues, yin is sweet, caring, and would do anything to keep people safe, yang, on the other hand, is quite rude, mean, and will not hold back if hurting someone, both are he/hims, but will accept being called they/them, they are the fan favorites too