Peepi is the hamster assigned to Ms. Bitters class to reduce misery amongst the students. Unfortunately (?) for Peepi he becomes a tool in a Earth-conquering plot of Zim's and he becomes modified through Irken technology into…Ultra Peepi! Ultra Peepi rampages through the city until Zim finally stops him…even though he was destroying the humans.
Ultra Peepi rampages through the city!
Peepi appeared in these episodes: 9B - Hamstergeddon.
