This papercraft is Rosalina, a character that debuted in 3D platform game Super Mario Galaxy, the paper model was created by MountainOfCookies. Rosalina first appears in the Gateway Galaxy, and she is also the adopted mother of the Lumas. Rosalina commands the Comet Observatory. She is a very powerful figure, as her duty is to watch over and protect the cosmos as well as the Lumas.
Rosalina's back-story is chronicled in her storybook told by her in the Comet Observatory's Library in Super Mario Galaxy. Nine chapters are unlocked throughout the game, and the last is unlocked by completing the game.
You can download this papercraft template here: Super Mario Galaxy - Rosalina Free Papercraft Download