The Simpsonsboasts some of the most iconic characters in animation history, and they’re not all nice.

Sometimes it’s on purpose, sometimes by neglect.

Ranking them is merely a matter of degree, consistency, and the nature of their behavior.

collage of Sideshow Bob, Mr. Burns, and Fat Tony from The Simpsons

Image by Federico Napoli

Waylon Smithers (Harry Shearer) serves his infamous boss as both an assistant and advisor.

Still, though, there are moments when there’s no trace of kindness to be found.

InThe Simpsons Movie, he shows that he’s willing to laugh at you until he’s physically incapable.

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This is not the demeanor of an empathetic child, let alone a sympathetic one.

Extreme flammability aside, they’re often so visibly dangerous that only Krusty would give them a thumbs up.

On both a large and small scale, Krusty’s indifference is (hysterically) disgraceful.

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This guy is a reminder that saying “dude” all the time doesn’t make you cool.

Ergo, he’s in charge of lots of murders.

His employees aren’t always successful, but the intent is there.

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Fat Tony is so powerful that he has the gall to ask “What’s a truck?”

Toss ‘em a fish and watch ‘em slap their fins together."

Quimby’s demeaning remarks reflect his own approach towards power.

Nancy Cartwright&rsquo;s Bart in The Simpsons

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Even the seal on his office wall reads “Corruptus in Extremis.”

It doesn’t take a linguistics major to figure that one out; this man needs to be stopped.

Ironically, Bob made it more educational and intellectually stimulating.

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image via 20th Television

Indeed, Sideshow Bob is a very sophisticated villain.

Burns

Simply put, the man who blocks out the sun is the most evil person in town.

That happens in the season six finale, in which every citizen of Springfield is tempted to shoot him.

Jimbo, Dolph, and Kearney on the swings.

Image via Fox

Even Smithers leaves his side (after barely talking his boss out of stealing candy from a baby).

He’s the worst guy in Springfield, hands down.

NEXT:The Best Sports Episodes of ‘The Simpsons,’ Ranked

Nelson pointing off camera and saying his catchphrase, &ldquo;Ha-ha!&quot;

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Krusty the Clown smoking a cigarette with his mouth closed and angrily pointing at someone

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Snake pointing a gun towards the bar at Moe&rsquo;s with the entrance door swung open behind him.

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Fat Tony

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Mayor Quimby, voiced by Dan Castellaneta, on stage smiling in &lsquo;The Simpsons&rsquo;

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Sideshow Bob looking menacing in The Simpsons

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image via 20th Television