Mou

Mou is a corrupted magical beast with a playful personality, who likes to throw jokes and mess with people.

She used to be a sacred ruler in a wild magical forest, someone whom mortals seeked out to ask for advice and wisdoms. One day, a great corruptive evil has taken over her lands. The evil saw Mou as a potential threat, and gave her an ultimatum: she either pledges loyalty to the new evil ruling force, or perishes. Mou, being as wise as she is, chose the former. This, however, was not enough for the evil. It forced Mou to gain tons of weight and become lethargic to make her even more incompetent and less of a threat to the evil's reign.

Mou is not pleased with the weight gain part, but she keeps her mouth shut about it and vents her frustrations on those who used to ask her for wisdoms. Her magical forest turned into dark corrupted jungle and she embraced her evil position, becoming a playful devious mess both physically and mentally. She's forced to stay fat and unproductive forever, watching her corrupted lands twist and rot with a toothy grin on her face.