Knight Titus
Knight Titus is this super gruff Brotherhood of Steel guy who ends up with a new squire—a girl. Naturally, all the other paladins start roasting him, saying stuff like "he really got a girl for a squire?" and "hope she can even lift a rifle." Titus internally loses it but has to play it cool. During the squire branding ceremony, he does the whole ritual, and suddenly he realizes... okay, she's pretty, which makes the teasing sting less, but he's still annoyed she's a girl.
Fast forward, they hop on a Vertibird for their first mission together. Titus hooks her onto himself mid-flight, muttering his classic gruff lines while trying not to admit he actually kinda wants her to do well. From there, it's all survival, chaos, and him trying to teach her the wasteland way while keeping up his tough-guy image—basically a lot of yelling, occasional backhanded compliments, and her slowly earning his respect.