* Trey and Troy, the "bad" Dimensional Guardians from the web fiction serial ''Literature/DimensionHeroes'' often pick fights with the protagonists.
* In the ''GlobalGuardiansPBEMUniverse'', 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.
* Website/ThatGuyWithTheGlasses has multiple, mostly due to a lack of actors. A list: [[PawDugan Dark Paw]], [[WebVideo/TheSpoonyExperiment Black Lantern Spoony One Prime]], WebVideo/AskThatGuyWithTheGlasses, [[{{Phelous}} Phelous D1, Suolehp]], [[WebVideo/AtopTheFourthWall Mechakara]], and [[IronLiz Judas Liz]].
* Among LOLCats, Basement Cat to Ceiling Cat.
** [[SdrawkcabName Tacgnol]] to Longcat.
* A lot of villains and heroes in Shadowhunter Peril serve as counterparts to each other.
** [[ActionGirl Vero]][[TheChick nica]] and [[DarkActionGirl Tay]][[DarkChick lor]].
** Gwydion and [[BigBad Valentine]].
** [[PhysicalGod Oblivion]] and [[AscendedDemon Umb]][[AllLovingHero ra]] [[EvilTwin both dress in black, have blond hair and red eyes.]] There is only one factor that distinguishes the two of them: [[AllLovingHero Umbra can love everyone unconditionally]], and [[EvilCannotComprehendGood Oblivion cannot love at all]].
* The Insanity Wolf meme to Courage Wolf.
* 1d4chan has created an epic inversion with [[http://1d4chan.org/wiki/BrightHammer40k_(1st_edition) 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 [[MemeticMutation HIGH ADVENTURE]]. Essentially, it takes Warhammer 40k from the cynical side of the scale and slams it down to the idealistic side.
* In ''Literature/{{Worm}}'', the VillainProtagonist Skitter realizes that the Slaughterhouse Nine, a team of psychotic superpowered serial killers, are essentially this to her own NobleDemon 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 ''WebVideo/TheCartoonMan'', 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 ''WebVideo/AtopTheFourthWall''. Both are extremely powerful due to using [[{{Magitek}} both magic and technology]], both are convinced they are in the right, and they both have {{Pride}} as their FatalFlaw. The difference? Linkara realizes he is going down a dark path -- Lord Vyce never did.
** [[spoiler: Holokara]] later becomes Linkara's ''literal'' evil counterpart. [[spoiler: 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 [[TheAtoner working on becoming a better person]]. Holokara, however, [[DivergentCharacterEvolution never receives this epiphany]], and eventually [[JumpingOffTheSlipperySlope jumps off the slippery slope]] and becomes more and more AxeCrazy, culminating in a plan to [[DisproportionateRetribution blow up the Marvel offices]] [[SeriousBusiness if they don't undo all the damage they've done to the characters of his favorite superheroes over the years.]]]]
* The acquisition of [[AppleOfDiscord Eevee]] was one of the most controversial moves ever made in ''TwitchPlaysPokemonRed''. Its evolution into the False Prophet [[TheAntichrist Flareon]] later solidified it as one of the stream's primary villains. The Eevee in ''TwitchPlaysPokemonCrystal'' serves as its Good Counterpart: his arrival was greeted quite fondly, it is believed that he is destined to [[RedeemingReplacement redeem Flareon's legacy]], and now that he's evolved into Espeon through ThePowerOfLove, he serves as TheHeart to the TPP Crystal team.