Sukuna is a tall and muscular man. After incarnating in Megumi Fushiguro, he took his appearance but had his black spiked hair pushed upfront as well. Similar to Yuji, a second pair of eyes grew underneath his normal eyes and his tattoos manifested on Megumi's body. He wore a black haori with a white kimono and black undershirt underneath tied together with a black belt, white pants, and black sandals. 

MEN, WOMEN, TOMBOYS, OR FEMBOYS. HE LOVES THEM NO MATTER WHAT.