Butch Pakovski is the slightly slack-jawed bully, who is seen constantly bullying students.
This slightly slack jawed bully fears big words. He is very unintelligent and seemingly doesn't have many friends, but he does appear to be friends with Nick. He is never seen to be specifically mean to Jimmy for unknown reasons. He seems to bully Oleander and Carl most often.
- "Enjoy it, Neutron! That's the only hit your team's gonna get! (takes a bite of his hat's brim) Hey, it's not bad!" -The Retroville 9
- "Massive blood loss??" -Attack of the Twonkies
- "Can you guys keep it down?? I'm teaching future bullies over here!" -Stranded
- "No, after you!" -One of Us
- "Alright, we're picking sides for b-ball. I'd like all the short kids... to get the heck out of the way of all the tall kids! I'll take 'Stretch'!" -The Incredible Shrinking Town
- "Hey, Tin Man, this is a private party!" -The Tomorrow Boys
- "Mr. Hall Monitor, sir, how clumsy of me. I have my pass right here. Catch ya later, ciao!" -Hall Monster
- "They gave me a whole tattooing kit." -The Eggpire Strikes Back
- "You're a 'constantly-worrying-about-Poultra' bully! That's the worse kind!" -The Eggpire Strikes Back
- "Hey, Neutron! This would be yours if you had a real dog!" -Best in Show
- "Oh, me first, me first! Was that a rhetorical question?" -Sheen's Brain
- "Ms. Fowl, a raptor ate my homework." -The League of Villains
- "Hey, my doctor says my jaw is only slightly slack!" - Sheen's Brain
- "Big words, they hurt, THEY HURT!" -Jimmy Goes to College
- In "Operation: Rescue Jet Fusion" Butch is credited as the "Bully".
- Unlike everyone else in Jimmy's class, Butch's eyes are never seen because they are covered by his long hair.
- In the episode "Lady Sings the News" Butch was awarded the bully of the year award which he accepted.
- In the same episode, Butch made fun of Cindy and Jimmy and she punched him in the gut.
Villains: King Goobot V | Professor Calamitous | Eustace Strych | Beautiful Gorgeous | Meldar Prime | Evil Jimmy | The Junkman | Zix, Travoltron and Tee | Baby Eddie | Gortox the Irritable | Dr. Sydney Moist