Nah. Nightcrawler is really chill. The kind of person who'd give you a bro hug or a noogie without being weird about it.
In basically every setting (with exceptions like Age of Apocalypse, where everyone was depressed and angry all the time, not without good reason), Kurt's the kind of guy who'd be having a bad day and make it his mission to make everyone else feel better because it'll make him feel better. He's the kindest, genuinely nicest guy on the team and he's always willing to believe the best in people, even those who've betrayed him - his mother is
Mystique for fuck's sake, and every time she gets involved in something, his reaction is still 'trust but verify and wait for the twist'. And she's legitimately tried to kill him
multiple times.
Oh, she has enhanced strength? I wasn't aware of that, I just thought she was ripped. She has a nice six pack, but she's still a woman, different frames and all.
Not enhanced, exactly, she's strong in the same way Wolverine is, she's just insanely well-trained - like Logan, she'd be at the top-end of 'baseline human' in terms of physical prowess, if that makes sense, more Batman (peak human) than Captain America (artificially-enhanced human). She's way more agile than he is though, he's a brawler, she's a hit-and-runner, he's strength, she's agility, so her having an athlete's body makes sense.
Is he someone who knows a lot about mutants? Shouldn't Kitty be the guide based on how much of a nerd she's portrayed as? Y'know I don't know much at all so please enlighten me.
Kitty's a tech nerd as opposed to a science nerd. She'd be able to help program one of Beast's science gizmos, but in terms of understanding what it does, she'd probably be lost. Like the difference between being able to understand HTML tags for forums and building a website from scratch.