Evil Counterpart: Web Original
- Defection: is a setting where travel between dimensions is relatively common, albeit only truly available to those on the larger end of the power pool, thus resulting in a lot of alternate versions of the same person.
- Trey and Troy, the "bad" Dimensional Guardians from the web fiction serial Dimension Heroes often pick fights with the protagonists.
- In the Global Guardians PBEM Universe, The ambitious and brutal Blackstar was thrown out of the Guardsmen, the intergalactic superhuman police force, and is now the sworn enemy of the heroic Guardsman, defender of Earth.
- The Tyrants are a "mirror universe" version of the Global Guardians.
- That Guy with the Glasses has multiple, mostly due to a lack of actors. A list: Dark Paw, Black Lantern Spoony One Prime, Ask That Guy with the Glasses, Phelous D1, Suolehp, Mechakara, and Judas Liz.
- Among LOLCats, Basement Cat to Ceiling Cat.
- Tacgnol to Longcat.
- A lot of villains and heroes in Shadowhunter Peril serve as counterparts to each other.
- The Insanity Wolf meme to Courage Wolf.
- 1d4chan has created an epic inversion with Brighthammer 40k, a reimaging of Warhammer 40,000 that replaces the Grimdark future of Warhammer 40k with a bright happy Star Trek-esque universe where the everything is going great and instead of war, there is only HIGH ADVENTURE. Essentially, it takes Warhammer 40k from the cynical side of the scale and slams it down to the idealistic side.
- In Worm, the Villain Protagonist Skitter realizes that the Slaughterhouse Nine, a team of psychotic superpowered serial killers, are essentially this to her own Noble Demon team, the Undersiders. They rely upon hit and run tactics and pick their battles with utmost care, striking only to cause maximum damage at minimum risk to themselves, and deliberately tailor their tactics to induce as much fear as possible.
Skitter: The Nine are us on steroids.
- In The Cartoon Man, Simon becomes Roy's evil counterpart when the same black ink that caused Roy's cartoon transformation turns him into a mustache-twirling cartoon villain.
- Lord Vyce to Linkara on Atop the Fourth Wall. Both are extremely powerful due to using both magic and technology, both are convinced they are in the right, and they both have Pride as their Fatal Flaw. The difference? Linkara realizes he is going down a dark path — Lord Vyce never did.
- Holokara later becomes Linkara's literal evil counterpart. He is a hologram programmed with Linkara's memories, and the two start off as basically identical. Linkara puts Holokara in charge of the show while he goes to find out why his magic stopped working, which turns out to be because Linkara, who had become increasingly arrogant and self-centered, was in danger of turning evil. Linkara, horrified at this realization, begins working on becoming a better person. Holokara, however, never receives this epiphany, and eventually jumps off the slippery slope and becomes more and more Axe Crazy, culminating in a plan to blow up the Marvel offices if they don't undo all the damage they've done to the characters of his favorite superheroes over the years.
- The acquisition of Eevee was one of the most controversial moves ever made in Twitch Plays Pokémon Red. Its evolution into the False Prophet Flareon later solidified it as one of the stream's primary villains. The Eevee in Twitch Plays Pokémon Crystal serves as its Good Counterpart: his arrival was greeted quite fondly, it is believed that he is destined to redeem Flareon's legacy, and now that he's evolved into Espeon through The Power of Love, he serves as The Heart to the TPP Crystal team.
- In RWBY, Mercury Black can be seen as this to Yang Xiao Long. They're both Blood Knights who serve as the muscle for the bad guys and the good guys respectively. Mercury is a Dance Battler with Armed Legs, Yang is a Boxing Battler with Arm Cannons. Yang is warm and friendly outside fights, while Mercury is Affably Evil.