Dabi is a reasonably tall, pale young man of slim shape but somewhat muscular build, described as in his early twenties. He has white hair with a few red flecks at its crown that spikes upward around his head, hanging low over his eyes, which are thin, turquoise, and heavily lidded. Dabi's hair was dyed black before revealing his true identity.
His most striking features are undoubtedly the patches of gnarled, wrinkled, purple skin that cover much of his lower face and neck.