Guppy is a minor character in Super Mario Galaxy. He is an orca who appears in the Sea Slide Galaxy and the Deep Dark Galaxy, where during one mission in each galaxy, he "takes over" a large body of water, and if Mario wishes to take it back, he has to swim through eight rings in a set amount of time. After Mario does that, Guppy rewards him with a Power Star.
If Mario touches Guppy, Mario bounces back on the ground and lose a Shell if he is holding one, but he will not take damage.
Super Mario Galaxy trading card description
Guppy's bark is definitely worse than his bite. This orca may look menacing, but he's really only aggressive to penguins and Toads. To Mario, Guppy is ultimately harmless, but he does present two challenges: he'll make Mario swim through eight rings in one body of water, and if Mario bumps into him, Guppy will bounce him to the floor. Look for Guppy in the Sea Slide Galaxy and the Deep Dark Galaxy.
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