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Most of the rogues' gallery (Riddler, Penguin, Two-Face, etc.), with the Joker probably the least likely of all.
The Marvel superheros and the villains.
Although he has had many love interests over the years, Batman has never been married in a canonical story.
2003, but they are now seperated. Seperated in 2010.
The current version of Batman (Bruce Wayne) is not married. The Golden Age Batman, ret-con'd to Earth-2 Batman, eventually married a reformed Selina Kyle, aka Catwoman. They eventually had a daughter, Helena Wayne, who grew up to be The Huntress. In the current New 52 continuity, there is a "new" Earth-2 Batman who, while otherwise updated, also had a daughter named Helena Wayne. Her mother, and wether or not she was married to that Bruce Wayne, is not specified.
Any one of the rogue gallery would not get an invitation, but if you were to choose, highest on that list would be the Joker.
Most of the rogues' gallery (Riddler, Penguin, Two-Face, etc.), with the Joker probably the least likely of all.
His butler, Alfred Pennyworth, would be invited.
He is a fictional character and this is not possible.
The Marvel superheros and the villains.
batman
The Joker would not invited.
Although he has had many love interests over the years, Batman has never been married in a canonical story.
He would know all the same people he knew before he got married.
Most people would not get an invention. Inventions are few and far between even among fictional super heroes.
Batman is fake, so he's not married
If batman got married he'd have bat babies. But i doubt he'd get married...