Monster 7

The Monster 7, is the second secret-guard-monster from the video game Karamari Hospital.

Description
Monster 7 appears to be a transparent humanoid with any physical attributes. As the protagonist sits on a red-chair, various purple-pink visions would start hunting down the protagonist for about 10 minutes, The longer the player is sitting, the worst the hallucinations would become towards the player. Ambient music would slowly start playing and the room would start getting much darker. Sometimes blood trails can also appear in the room. Once the trails get totally visible, the humanoid would appear smiling at the player. After 10 minutes passed, the player will forcefully get off the chair, and the Monster 7 would appear sitting on it.

If the player murders the Monster 7 and sits on the chair, the screen would start shaking rapidly with various of screams heard in the background, which ends in the player getting murdered. When-sitting the player can not move at any point, though the player can stop sitting on the chair anytime, if so the hallucinations would restart.

Trivia

 * Some say that the Monster 7 sitting on the chair is actually the players soul.