Yume Nikki:Mars-san

Mars-san
The weeping, red-eyed Mars-san
Location	The Martian Underground
Role	None
Size	Huge
Effect Reaction	• Kitchen Knife: Eye colour changes
Notes	Produces a tone when interacted with.

Mars-san (also known as Tasei-san, Kasei-san or just The Martian by some fans), is an NPC found underground on Mars.

Mars-san is a tall, indigo creature with a single large eye and a single foot. It is found weeping near what appears to be a crashed locomotive.

Interaction

Mars-san produces a remorseful three-tone chime (high b flat - e flat - f) when Madotsuki interacts with it, coupled with a small darkening of the screen. Additionally, Mars-san can be stabbed with the Kitchen Knife. Instead of dying, it leaves a wound on its foot and changes the color of the eye from red to green with a blue pupil; a second stabbing will change the eye color back to red with a pink pupil.

Trivia

• Some fans consider the creature that is sometimes seen in the pond on Witch's Island to be the child of Mars-san due to their shared likeness.
• Mars-san is a significant character and a large source of speculation, being included in most theories about the game.
• In the manga, Mars-san behaves similar to a supercomputer or a security system, as it talks like a robot in it.
• Mars-san bears a resemblance to the 1926 surrealist painting "Person Throwing a Stone at a Bird" by Joan Miró. Other characters also resemble famous surrealist paintings, such as Tokuto-kun and FACE.
• In order to reach Mars-san, you have to fall sleep in three different beds, meaning you would be dreaming in a dream in a dream.

Gallery

• 

  Mars-san's eye turns green when stabbed.

• 

  Mars-san in the manga.

• 

  Mars-san bears a resemblance to Person Throwing a Stone at a Bird.