BASIL is a major supporting character and the tritagonist in OMORI. He serves as one of the major driving forces behind the story’s events as the party spends most of the game looking for him after his sudden disappearance. In HEADSPACE, BASIL is a medium-height boy with pale skin, teal eyes, mint green chin-length hair, and wears a purple-blue and pink flower crown. He wears knee-length denim overalls with a large pocket on the chest and a yellow button-up shirt under. He doesn’t wear any shoes.

In the real world, he has blond hair and has a single pink flower tucked behind his left ear. He wears a green knitted sweater vest over a white button-up shirt, beige shorts, and black shoes, resembling the same clothes that SUNNY wears. He also appears shorter than most of his friends, being as tall if not shorter than SUNNY.