This papercraft is Gunter, the name of the penguin that most commonly accompanies the Ice King, although in "Princess Monster Wife", based on the animated TV series Adventure Time, the paper toy created by Poe.
Gunter is shown that multiple penguins have subtle variants of that name but the Ice King pronounces the other penguins' names differently. The Ice King uses Gunter as his personal servant, whereas the other penguins working for the Ice King are more or less slaves. It is not completely clear whether Gunter is male or female. However, in "The Chamber of Frozen Blades" Gunter lays an egg, which would likely mean it is female.
Gunter looks like a regular penguin with big black eyes. She/he has a black back, black flipper-like wings, and a white flat belly. She/he also has a pointed yellow beak and yellow feet with three toes.
About this paper toy:
Height: 5 in
Page Number: 2