Undyne is an anthropomorphic fish monster. She has blue scales and a long red ponytail. She has fins on the sides of her head, and sharp yellow teeth. She has an eyepatch on her left eye. Her eyes are black, and she has no nose. Her armor is spiked, and she is the Royal Guard of Monsters, who has suffered from humans for long. After being killed by a human, her determination brought her back to life in an empowered form to eliminate the evil humans. A hero to her people. Uses magic blue spears.