* AdaptationDisplacement: Most people who know about Brainiac are more familiar with his evil IA incarnation from [[WesternAnimation/SupermanTheAnimatedSeries the cartoon]] than they are with the earlier comic book incarnations. This is most likely the reason it has become a frequent RetCanon.
* CompleteMonster:
** Numerous incarnations at Monster/{{Superman}}, both Pre-and-Post-Crisis.
** His {{Franchise/DCAU}} incarnation (both television and ''WesternAnimation/SupermanUnbound''), as well as ''WesternAnimation/LegionOfSuperHeroes'', at Monster/DCAnimation.
** His ''Series/{{Smallville}}'' incarnation at Monster/LiveActionTV.
** His ''VideoGame/JusticeLeagueHeroes'' incarnation at Monster/VideoGamesAToK.
** The Brainiac 8 (Indigo) incarnation from ''Series/{{Supergirl 2015}}'', at Monster/{{Arrowverse}}.