Undertale is a pretty unique game. It all depends on your choices. You can do a pacifist run, a neutral run and a genocide run. If you the genocide run, you will regret it.

Sans The Skeleton is a monster in the Underground. He is very lazy but also very smart. He is a weak monster. Many people thought that but they are wrong. He is very powerful.

"Hey there kiddo. What's up with you?"