With the exception of The Incredibles aka Mr. Incredible and Elastigirl aka Bob and Helen Parr, it’s unheard of for superheroes to marry each other. The hero would be distracted and lose focus from preserving justice.
Think about it. Imagine if Batman and Catwoman (who did have a relationship) tied the knot and had kids.
“Bruce, dear, do you mind picking up Lucy at school?” she’d ask one afternoon.
“Can’t, hon. I’m in the middle of a chase to get The Frowner. Gordon’s got me on a tight leash from the last time I played Dad.”
Superheroes in the DC Comics Universe rarely marry.
Peter Parker married Mary Jane Watson and Clark Kent wed Lois Lane. But, first, those marriages were brief; and, second, Spiderman and Superman remained single.
Superheroes in the Marvel Universe prefer singlehood. It’s a meat market. Captain America, Wolverine, Iron Man, Storm, Banshee, Professor X. They’ll have a cocktail and dance but that’s it.
They date from time to time such as when Steve Rogers had a fling with Sharon Carter; but c’mon, if you’re going to be an Avenger you can’t decide when to avenge and when to make dinner.
In the real world, it’s been a few years since Psychology Today updated its series on the superhero intellect. Great collection of articles that you wouldn’t expect to read, such as this one that explains why Batman’s suit is not indicative of dissociative identity disorder.
On a side note, wouldn’t Twitter be a great superhero name? The Hidden Flying Duck is my name, according to the superhero name generator. It’s random every time you reload the page. Quack.