Madotsuki

Madotsuki is the protagonist of Yume Nikki. She is one of the three characters in Yume Nikki with an official name, since characters require a name for the menu screen in RPG Maker games (the other two being Monoko and Monoe, specified in their image files).

As with virtually everything else in the game, Madotsuki's identity and life are a mystery. Only what can be seen in-game can be considered canon, although there are many varying interpretations of her.

Fans speculate that she is young - anywhere from a young child to an early teen - although arguments can be made for any age.

Madotsuki is a playable character in the fighting game M.U.G.E.N, and in fan games and artwork she is commonly portrayed wielding her iconic kitchen knife.

Trivia

 * The literal translation of "Madotsuki" is "windowed," and thus possibly a reference to her shirt pattern, it's also a somewhat obscure Japanese term for a person who spends a long time looking out the window; that is, a daydreamer.
 * Her wielding a rifle is a reference to the game Yume Nikki Soul Dream.