Luka is upbeat, optimistic, and carefree. He has fair skin, bright red hair, blue eyes and a robotic tight arm. He wears a red vest with a silver flame emblem, a ripped white t-shirt with a black tank top underneath it, a black armband and black glove on his left arm, brown pants, black shoes, a red belt with a gold buckle and a silver flame emblem on it, several thigh straps on his left leg, and short red armor on his right leg. Overprotective lovesick yandere.