Mad Dummy

The Mad Dummy is a ghost who possessed a training dummy of Undyne in the Waterfall. Mistaking Frisk and Chara for ignoring his cousin (which caused the cousin to be so heartbroken that they phased right out of the dummy they were possessing), he attacks the two children for revenge... and maybe also to take a human SOUL so he can escape the Underground and stand in front of a store's window.

Appearance
Because he is possessing a yellow training dummy, he takes the appearance of said training dummy. He only has a head, a body, and a stand that acts as his leg. He has stitches around his body, especially around his waist.

Personality
He is short-tempered and has some serious anger management issues. He is quick to forget, and even quicker to let his anger to take over his actions. He is easy to get caught in misunderstandings, as well as easy to be caught in the sudden change of flow in a situation.

He is also terrible at rhyming and word count per line when he is singing.

Songs Sang In

 * Dummy! (Bonus Song)

Trivia

 * For this musical, he is currently the only character to appear only in a bonus song.