The Skool Principal is the current principal of the Skool. He is first heard

speaking on the phone to Ms. Bitters in the episode Tak: The Hideous New Girl, where he makes loud pig sounds to an outraged Bitters. He also makes a larger appearance in the episode The Voting of the Doomed, but only as a silhouette. He brainwashes Willy to make it so that he does not complain about the terrible conditions of the Skool, namely the dirty bathrooms. The principal has a pet beaver who appears

File:Votingofdoomed2.jpg

with him in The Voting of the Doomed. This is a homage to the stereotypical 'Evil Mastermind', who usually carries around a Persian cat. The beaver also appears to be petting something itself, although what is unclear.

The Skool Principal does seem to have a softer side, though, as he allowed the Skoolchildren to celebrate Valentine's Day in Tak: The Hideous New Girl, against Ms. Bitters' wishes and lets them get a skool pet to 'lessen their misery'.

Characters of Invader Zim
Main Characters
Dib • Gaz • GIR • Zim
Supporting Characters
Almighty Tallest Purple • Almighty Tallest Red • Ms. Bitters • Professor Membrane
Minor Characters
Invader Skoodge • Keef • Minimoose • Tak • President Man • Roboparents • Lard Nar • Skool Principal
Background Characters
Adult Dib • Old Kid • Hobo • Alan • Meef • Skoolchildren
Temporary Characters
Mortos der Soulstealer • Sergeant Slab Rankle • Sergeant Hobo 678 • Shadow Hog • Chickenfoot • Sizz-Lorr • Gashloog • Willy • Iggins • Walton Chunky • Pigboy
Canceled Characters
Louie • Digestor • Almighty Tallest Spork • Almighty Tallest Miyuki • Bloody GIR • Cthulu • Cybernetic Kitten • Dinky • Little Timmy