A Fautso is a fat genie-like enemy in Super Mario RPG: Legend of the Seven Stars. Its name sounds like a cross between "fatso" and "thought so". A Fautso can only be summoned to battle by a Box Boy. Its psychopath thought suggests that it was being held captive by the Box Boy and was forced to fight Mario. In battle, it is resistant against most status effects such as fire and thunder, but it is weak against ice and jump attacks. It is proficient in using the spells Meteor Blast, Boulder and Aurora Flash. Overall, it has stats that are well rounded, but inferior to Box Boy. However, the reward for defeating the Fautso is low, because the player gains 5 exp. with no coins or items.
An unused enemy from Super Mario RPG: Legend of the Seven Stars, named Baba Yaga, resembles a blue Fautso. Baba Yaga's name comes from the Slavic folklore's Baba Yaga, which is a supernatural being who appears as a deformed/ferocious looking old woman. The only things known about it were that it had higher HP, knows the move Mega Recover, and that its psychopath was "Feeling kinda round..." In a Japanese guide, the Bean Valley section shows artwork of Baba Yaga representing Fautso. Most other times when artwork is shared in the guide, the difference between sprite colors is very subtle.
During development, the final boss was conceived as an extremely similar genie. It is likely that its design was repurposed as this enemy after Smithy was finalized.