Eluca is a silver porcupine with red eyes and a large, unkempt mane of black hair. He's dressed in a trenchcoat, pants, and shoes, all black. Underneath his coat, he wears a grey vest, a white shirt, and a navy tie. Unlike his mentor Rinny, who tortures people solely for sadistic fun, Eluca justifies his actions with philosophical delusions. He's nihilistic and misanthropic, believing that the malinos live too perfect lives in their utopia and that they need conflict to be "developed".