Prinplup is a penguin that is considerably larger than its pre-evolved form, Piplup. It has two large wings that are about half the length of Piplup. On Prinplup's head is a yellow crown that lies above the eyes. Prinplup's torso is a light blue with four white spots, two on each side. The feet of Prinplup are more webbed than Piplup's and are yellow. It's fins are tipped with light blue. It also has a dark blue tail in the shape of a fin.
Prinplup, like all the other Water-type starters, has the ability Torrent. When Prinplup's HP is below 1/3, it's Water-type moves increase in strength. Hunting in icy waters, Prinplup's most effective weapons are its flippers, which are strong enough to snap a tree in two.