Bat-Mite is a Batman character created by Bill Finger and Sheldon Moldoff. He's Batman's #1 fan, who's actually an imp from the fifth dimension with magic powers. Technically he's a hero, but he often ends up causing more harm than good. Sometimes he gets into fights with Mr. Mxyzptlk, a Superman villain of the same species.
He vanished at the dawn of the more "realistic" Bronze Age, but his existence was eventually reestablished in the Modern Age in a Legends of the Dark Knight story. However, the state of his existence has been rather ambiguous since his return, with him both being described as a figment of a criminal's imagination and an imp from the fifth dimension.
He's taken the spotlight himself a few times after his return, including Knightfall parody oneshot Mitefall, a Bat-Mite miniseries, and the Elseworlds Superman and Batman: World's Funnest, a fight between him and Mxyzptlk across the DC Multiverse.
- Darker and Edgier: His appearance in Batman R.I.P., where he's more serious and unsettling than his default portrayal, but still looking to help Batman.
- Depending on the Artist: His Chest Insignia can be a misshapen bat-insignia, a lightning bolt or an M (likely the first one was the original idea).
- Eldritch Abomination: Even if he is just a prankster, he still belongs to the same species as Mxyzptlk and is thus still one of these at the core.
- Everyone Went to School Together: Word of God says that he and similar DC characters like Qwsp and Johnny Thunder's genie Thunderbolt come from the same dimension as Mxyzptlk.
- Great Gazoo: He is to Batman as Mxy is to Superman... except he's a gigantic fanboy who honestly wants to help instead of cause trouble. Naturally, Batman finds this even more annoying than if Bat-Mite were just out to get him. (Also, Bat-Mite does sometimes knowingly make things harder for Batman, just to see how his hero is going to get out of the situation.)
- Loony Fan
- Maybe Magic, Maybe Mundane: Two stories by Alan Grant show Bat-Mite appearing to a criminal named Overdog. Both times Batman (who doesn't see Bat-Mite) rationalizes that these were just Overdog's drug-induced hallucinations, but the reader is left wondering...
- Person of Mass Destruction: The fight between Bat-Mite and Mxyzptlk in 2001's World's Funnest is notable for destroying the entire DC Multiverse. There's even a scene where Darkseid "finds" a paper with the Anti-Life Equation on it that simply says: "Bat-Mite + Mr. Mxyzptlk = Anti-Life". Darkseid promptly laughs himself to death.
- Reality Warper
- Shoo Out the Clowns: Introduced in the fifties, but vanished (much like Batwoman, Bat-Girl, and Ace the Bat-hound) during the Dark Age. He did eventually reappear with Alan Grant's help, though with some Cerebus Retconning.
- Unwanted Assistance: Batman's reaction to Bat-Mite's efforts to help him (when he's aware of him) is to tell Mite to stop trying to help.