Slurple

Slurples are health-sucking space leeches in Super Mario Galaxy and Super Mario Galaxy 2. They look very similar to Swoopin' Stus and/or Poinks from Super Mario Sunshine and act like Fuzzies from the Paper Mario series. Slurples have light blue skin, big eyes and snouts. They move by bouncing and will attack by latching on to Mario and draining health from him like alien leeches. In addition to damage, Mario's movement speed is slowed while a Slurple is attached to him. They can be defeated with a spin or a flung Star Bit. If hit with a Star Bit, they will yield three additional Star Bits, while they will only yield one if spun. They can also be defeated by obstacles such as Boulders.

Trivia
An unused purple variant of Slurple was found in the game files. Nothing is changed other than the color.