- Adaptation Displacement: Most people who know about Brainiac are more familiar with his evil AI incarnation from the cartoon than they are with the earlier comic book incarnations. This is most likely the reason it has become a frequent Ret-Canon.
- Complete Monster: One of the most infamous in DC comics and comics history as a whole. Superman is an icon of good and Brainiac as his thematic Evil Counterpart is more often than nought the exact opposite.
- Several incarnations at Superman (one is also at Batman).
- Several incarnations at DC Universe (one can also be found at Power Rangers).
- Several incarnations at DC Animation.
- His Injustice 2 and Justice League Heroes incarnations at DC Video Games.
- His Krypton incarnation at Live-Action TV A to L
- His Smallville incarnation at Live-Action TV M to Z.
- The Brainiac 8 (Indigo) incarnation from Supergirl (2015), at Arrowverse.
- His fan work incarnation at Fan Works.
- Can't Un-Hear It: Corey Burton's voice for Brainiac in the DCAU is what most fans tend to hear in their heads when reading his lines.
- Evil Is Cool: Naturally. Brainiac has consistently been a threat to Superman across the decades no matter how strong the Man of Steel becomes.
- Fashion-Victim Villain: On the cover to "The Super-Duel in Space" he's wearing a pink legless unitard◊. It is not flattering. There's a reason most of his revisions, such as the page image, at least include pants.
- Love to Hate: Brainiac is one of the few villains who can go toe to toe with the Man of Steel. His cold desire for Knowledge at any cost and status as the thematic Evil Counterpart to Superman make him one of the most well liked members of the Superman Rogues Gallery.
- Mainstream Obscurity: Brainiac was so ubiquitous and popular in the Silver Age that his name became slang for intellectual and introduced a word in the cultural lexicon, but his cross-media appearances has prevented him from being as famous as other villains. He has yet to appear in a single Live-Action film version of Superman (which has seen three Lex Luthors and two General Zods) and his most well known appearance, the DCAU take, is different enough from his comics that they make newcomers confused about the two versions.
YMMV / Brainiac