Indigo is a very tall man with a clown-like appearance. He has indigo hair, with two particularly large tufts at the side of the head, and his face is white, with purple lines near his eyes, presumably some sort of make-up. He is pot bellied, with thin limbs, and a muscular torso, making his body resemble a Volumetric flask. On his forehead he has a pair of purple round-shaped eyeglasses. He wears a large yellow polka dotted indigo scarf and indigo-striped shoes (similar to Kuro's) that make a farting noise every time he takes a step. He also wears indigo overalls that exposes his chest, with two lines of buttons on the front, and a lab coat over them. On his hands there is a pair of brown gloves. It seems that in his twenty years, he did not change much in appearance, aside from his scarf