A long time friends of the Mientwins since childhood when they were classmates at school.

As adults, Bentina is the complete polar opposite of the Mientwins, she's an introvert bookworm who never goes to parties, she's very shy around people and has spend the last 15 years at libraries. Bentina is rather plump by nature of her being a Grumpig, but in general she isn't much of an eater in general.

Despite this she still gets along with the Mientwins and occasionally stays in contact with them.