One of the Space Policewomen, she always shows up just before the Keroro Platoon can successfully conquered Earth every time. Poyon frequently busts Keroro and his men for crimes they both intentionally and unintentionally commit and often fines them, sometimes resulting in the platoon going broke. She can travel anywhere instantaneously through the use of space portals.
As a key figure in the Space Policewomen, she consistently appears at the pivotal moment just before the Keroro Platoon can successfully conquer Earth. Poyon frequently arrests Keroro and his men for crimes they both commit intentionally and unintentionally, often leading to financial difficulties for the platoon. She possesses the ability to instantly travel through space portals.