Baby Penguin

Tuxie is a baby Penguin that was lost on top of Cool, Cool Mountain in Super Mario 64. She needed to be reunited with her mother. Mario picked Tuxie up and carried her down the mountain, where her mother was located. For finding her baby, the mother penguin awarded Mario with a Power Star.

Tuxie is not actually referred to by name in the game and can easily be confused with another baby penguin who is also located on Cool, Cool Mountain. If Mario delivers this lookalike to the mother, she tells him that it looks nothing like her child (she says elsewhere that her child has her beak).

A baby penguin who may be a reference to Tuxie appears in Super Mario Galaxy in the second mission of the Sea Slide Galaxy.

Trivia

 * Tuxie's name comes from "tux", the shortened form of "tuxedo", a type of formal suit that bears an uncanny resemblance to a penguin's feathers.
 * If the player runs, then dive near Tuxie, she will do a dive too, and make a different chirp sound.
 * If Tuxie is picked up again after being returned, her mother will get angry and follow Mario until he drops her.
 * Tuxie's chirp is similar to car alarms.