I actually think it’s amusing to think that out of all the heroic X-Women out there, it’s Kitty Pryde who’s practically the most diva like in behaviour. Not that there’s anything wrong with it but I think considering her to be more in-line with a diva than with girls next door proper kind of makes you wonder if her fans are either willingly excusing her behaviour…or perhaps their idea of a girl next door’s a fiery technologically inclined woman.
(If X-Men Evolution’s any indication, if she were a much more normal woman she’d be boring.)
I could be nit-picking but I do remember more than one incident of her repeatedly losing her temper to the point of lashing out violently. And demanding to a fault. I guess in Kitty’s case, it’s not always so much about being overly saccharine (though this gets lost on some) but rather more to do with being incredibly sullen and pissed. It’s a malaise almost impossible to find in Betty Cooper.
If because she’s practically the (near) perfect girl next door in comics in the sense of being an idealised everywoman whilst Kitty’s practically a jaded fan surrogate. Not that Betty’s any less suspicious as she’s shown to be mentally ill in Riverdale. But I think with Kitty, the given characterisation she got is kind of diva-ish.
Easily annoyed when things don’t go well, willingly taking her wrath out on others, demanding what she wants (not that it’s a bad thing) and according to some readers, overly preachy. You know like any pop diva. I suspect her relatability arguably doesn’t just lie with being a fan surrogate but one who’s very contemptuous and pissed off with everybody else.
She even barely bothers to understand people’s intentions, even later on in the stories (as far as I remember) and I think her perpetual malaise with people resonates well with X-Men fans and naturally her enemy’s the very blonde, very posh (and light-clad) Emma Frost. (There’s a recurring gag in American productions where the popular girls are often blonde*.)
I suspect in Kitty Pryde’s case, she’s as if Ally Sheedy’s the girl next door or like in one of Plebcomics’s cartoons on appealing to Internet users a lot. If that’s the case, that might be telling.
*Though not unique to American productions, in Japanese animated productions blondes aren’t necessarily always popular girls (or if male, Chads) as they could be suspicious in other ways (delinquent, bullied victim, loser, outsider, otherworldly, exotic, foreign).