Antagonist 

Someone that claims to spread light, love, and hope like wildfire in real life, but really sows darkness, hate, and despair/desperation (in real everyday life).

She was an antagonist in real life her entire life. She made it her life's work to be an antagonist in real life.

Antagonist by The Original Agahnim May 28, 2021

Antagonist and Protagonist

The bad guy in a story.
A protagonist would be the good guy.
You can remember that, because Pro=good. and An=bad.

Examples for Antagonist and Protagonist
Antagonist:
Voldemort is the Antagonsit in the Harry Potter series.
Kronos is the antagonsit in the Percy Jackson series.
Protagonsit:
Harry Potter is the protagonsit in the Harry Potter series.
Percy Jackson, son of Posiedan is the protagonsit in the Percy Jackson series.

Antagonist and Protagonist by Anyonewantaredvine? October 18, 2010

Antagonist girl 

The joker to the Batman.

Lindsay, the antagonist girl, was trying to take control of the town.

Antagonist girl by Solid Mantis September 30, 2019

Antagonist girl 

The joker, the impractical joker girl, the clown girl.

The antagonist girl is gonna try and have you give somebody else hell today for her. She knows whose hands she can get dirty.

Antagonist girl by Solid Mantis September 30, 2019

Antagonist Void 

A very depressed man who considers himself an antagonist of reality. He is broke and cursed with bad luck, and even so still continues to gamble his life savings on Genshin Impact.

Hey is that Antagonist Void?

What drove you to that conclusion?

He spent ten thousand dollars on Genshin and got nothing good.

Ah that’s definitely Antagonist Void

Antagonist Void by Dapheraiz September 14, 2022

Dopaminergic Antagonist 

The ultimate kill joy. Someone who makes others so miserable, he/she suppress the effects of dopamine on mood.

Your boss is such a dopaminergic antagonist that every time you have a meeting with him, you're depressed for the rest of the month.

Dopaminergic Antagonist by BlackSheepofScience June 11, 2016

Vergil-Type Enemy/Antagonist 

A Vergil Type Enemy is a character, usually the protagonist's rival or nemesis, that resembles and directly antagonizes the later.

This character does so through a variety of factors, such as;

Having a similar apparel or design, most cases using a color scheme paralel to the one of the protagonist.
Or having a design that completely visually opposes the protagonist's looks.
Using techniques, fighting styles, or weapons that resembles the protagonist's own way of brawling.
Their inspirations and morals go against the protagonist's, strongly colliding each other's.
And many other topics.

"Dude, Jetstream Sam is such a Vergil-Type Enemy/Antagonist."

Vergil-Type Enemy/Antagonist by Nachopepper January 3, 2022