Fan Wujiu/Black Guard is a character from Identity V.

Black Guard's appearence:

Wujiu is a slender and tall young man with greyish-black skin, small amber eyes, and long black hair with white streaks tied into a long, braided rope reminiscent of a Qing men's hairstyle. A large white mark is on the left side of his face, resembling a swirling cloud pattern. He wears a black Chinese robe with stiff shoulder sleeves, gold pankous and hems, and a white piece of fabric over his heart, over a dark red robe with a high mandarin collar, skin-tight black pants, and dull, dark red fabric shoes. White linen bandages wrap around his ankles, and two leather belts are clasped around his left forearm. A bronze bell is attached to his waist, and he carries a black Chinese paper parasol with white Chinese seals attached to it in his right hand.

Why Xie Bi'an and Fan Wujiu look Identical is currently unknown; As they are not related. However, it's heavily implied that Fan Wujiu's appearance is based on Xie Bi'an's due to the unknown process used to bring Fan Wujiu back from the dead. Xie Bi'an's body being used as some sort of catalyst; would leave both of them looking the same but incomplete. Which is hinted at by their body markings(both of their markings fitting perfectly together like a puzzle) and the B-Release costume's name 'Incomplete'. If this is true, it would mean Fan Wujiu's appearance is actually Xie Bi'an's and not his own.