Undyne

Undyne is the former queen (one of two) of the Underground and the ex-wife of Alphys. She is the caretaker of the RUINs.

Personality
Undyne is a kind monster that acts as a protective mother for the protagonist; she employs tough love on the protagonist as well as Alphys. She cares for children and was excited to be a mother herself.

She enjoys cooking and bakes Golden Flower pie as well as her favorite, snail pie.

Undyne has a playful side and loves puns and bad jokes, and she even keeps a journal of puns.

Undyne is said to be intelligent and dreams of becoming a teacher. She has already prepared a curriculum for the protagonist by the time they reach her home in the Ruins. In True Pacifist Ending Credits, she stands outside a school and, in the Family Ending of a Neutral Route, she starts her own.

Appearance
She has light blue scales, fins on the sides of her head, scarlet hair worn in a ponytail with some loose, and yellow eyes with vertical pupils. She has moderately sharp yellow teeth.

She wears a navy blue robe with the Delta Rune on the chest. The robe has white sleeves. She also wears no shoes and reading glasses sometimes.