Penguin?
ぺんぎん?
About
Penguin? resembles a green penguin, but is unsure if it really is one. They are one of the main Sumikko characters. Most of their time is spent searching for the answer as to what they really are.
Appears In
Sumikkogurashi: Good to be in the corner
Sumikkogurashi: The Little Wizard in the Blue Moonlight
Sumikko Gurashi: Sora no Ookoku to Futari no Ko