Fūrōta is a ghost and a member of the Superhuman Bureau, which tracks and manages superhuman beings. His true age is unknown, and he remains permanently fixed with both the body and personality of a child. He was originally apprehended by Jīro Hitoyoshi during an investigation before being recruited into the Bureau.

He has messy yellow hair and lime green eyes. Fūrōta wears a baggy mechanic suit featuring a yellow star on the back and a red bow tie at the front. The sleeves are rolled up and secured with light brown straps. His outfit also includes a white collar, red and black shoes, and pockets.

Fūrōta displays a simple-minded and childlike demeanor, often engaging in playful pranks aimed even at children. He is also attracted to fellow Bureau agent Kikko Hoshino.

As a ghost, his abilities include phasing through inorganic matter and freely altering his shape. He can assume the forms of various animals—such as a dog or bird—as well as inanimate objects like a balloon. Fūrōta can also transform into other people and perform partial transformations, altering only specific parts of his body such as his head.

Later in the narrative, he operates a bar open to all superhumans. For a substantial part of the subsequent storyline, his role is largely limited to employing his transformation powers as situations require.