Tulip

Tulip is a magical familiar, a creature who's purpose is to assist her party members. There's one small issue... Tulip is very dumb and incompetent. She's completely useless to those she's assigned to, being only good at gaining weight and being tricked because of how naive she is. Her idiocy also makes her very susceptable to brainwashing and manipulations. Tulip often ends up being captured by evil antagonists who decide to make her very fat and reform her into a servant of evil. Nontheless, she's incredibly bright and enthusiastic, perhaps being more helpful for the antagonists than the party members that she's supposed to aid.