Nikolai has a pale skin, a long scar on his bluish grey left eye and a card-like eyepatch that covers his emerald green right eye, and white short hair with a long braid. Given his chaotic personality, he wears a prominent outfit of a jester, which includes a suit, a cape, boots, and a hat, all two-toned with black and white, as well as a pair of dark magenta gloves.