Clipso is the 4th boss from the Infinite Inferno in the first game, needing to be defeated to gain access to the 5th floor.
Biology
Like many Boss Yo-kai of the Infinite Inferno, Clipso resembles a Boss Yo-kai that the player has previously met and bested, this case Massiface, only stronger and given a darker color scheme.
Trivia
If looked at from the right angle, Clipso's legs and feet can be seen.