Shi

Description
Shi is the fastest character in the game, with a walkspeed of 13, which is faster than the base 10 walkspeed of a normal player. However, he only deals a quarter of your health. Shi would seem to be some sort of ghost, as he is slightly transparent. He has glaring red eyes, along with disgusting yellow teeth. Shi also spawns in the graveyard, which further suggests he is a ghost, or more likely a demon. His light is slightly smaller than Kyoki's, as his is 20 studs.

In-game Info
On his sign in the showcase room:"'Shi - Quick, but he'll only take a fourth of your health. If you hear his music, find a place to hide! Running from him is not an option!'"

Trivia

 * Shi's name is Japanese for death.

▪This further suggests Shi is a demon or evil spirit.
 * Shi's grave is the only grave with a cross.