Brain Chain / Comic Books

• Dumb Bunny from the Inferior Five ('60s humor comic from DC), whose name says it all, really. She's "stronger than an ox — and almost as smart!"
• In The Eye of Mongombo, Norbert Nuskle’s brother-in-law Boswick is so dim, it takes him roughly ten seconds to react or answer someone.
• The eponymous character from Groo the Wanderer was infamously slow of mind. It often took him pages to react to an insult, and recurring characters would frequently have to remind Groo that they had met before. Sometimes he'd remember that he knew them, but not whether or not he liked them. Say, what did he mean, "Slow of Mind"?
• Boom-Boom/Meltdown/Tabitha Smith of Nextwave: trailer-trash klepto with the power to make things go boom. She says "zomg" out loud and misspells her own name.
  "I hate cops! Because, like, cops keep arresting me and stuff? For stealing? Like stealing's a crime or something?
  • Forbush Man's mental powers do not work on her. Guess why. Her explanation? "I gave him the explodo because I am clever."
• A particularly extreme example would be minor Eldritch Abomination Avaggdu from Sláine. So terminally stupid that when tricked into biting his hands, he doesn't notice they're his and starts devouring himself until there's literally nothing left.
• Kelly from Soulsearchers and Company is undoubtedly helpful, cheerful and well-meaning. However, she is also far from the sharpest tool in the shed. In her background, it is stated that one of the reasons Arnold keeps her employed is that she usually forgets to ask for her salary.
• The Parademon from the Villains United miniseries. He even fully admits to wanting to die in a stupid gesture.
• Wonder Woman:
  • In their original iteration back in the pages of Sensation Comics two of the Heyday triplets were dumb blondes — to the point that their grandmother left their inheritance to the one smart triplet figuring they'd be better off with her in charge of their money — who still liked to pull pranks and hated fascists along with the rest of the Holliday Girls. Their The Legend of Wonder Woman (2016) iterations were reduced to twins, changed to redheads and the traditionally smart one became the clueless one while the other became the smart one.
  • Wonder Woman (1987): Stheno has a tendency towards cluelessness that irritates her sisters. One of her standout moments involved licking a television because there was ice cream on the screen, even though she's been around TVs before and should be aware it's just an image. It's possible she's lost a bit of grey matter during her numerous resurrections.