Monster Kid in the Fellswap: Magenta AU is a young, 9-year-old Lizard Monster and the Adoptive Prince of Monsters. At first when he met Frisk long ago, he used to initially hate and belittle her, but over time learned the error of his ways and became her very best friend and closest sibling. He was involved in a plan with Frisk to free Monsters that ended in them dying, but they were recently brought back. Interestingly, he now has the ability to transform into Temmie at will. He has no arms.