Geno

Geno is a playable character from Mario RPG: Legend Of The Seven Stars, as a star being, he had to inhabit a doll's body to speak with humans.

Mario RPG
After Mario became unconscious in the Rose Town inn, a star began circling around the inn and after looking at the dolls a toad named Gaz had lying around, the star settled on the Geno doll and began to possess it. It then walks out of the inn and heads for the nearby forest, where it searches for the star.

Superstar Saga
A small Geno doll makes an appearance as the host for the Star 'Stache Smash mini-game in Little Fungitown.