Leon has a tendency to say "Hm?" instead of "Huh?" This is something he gets from his mother. He also tends to run his hand through his hair when he's genuinely mad, but since he's such a happy-go-lucky boy, that's only come up once. Sometimes, he forgets words. He almost always texts with exclamation points.
Mia uses a lot of fillers like "um" and "uh" when speaking, though this is something I've been more consistent about including recently, so I'll have to go back and edit her to do that more in some of the earlier chapters. She also tends to end sentences with "I think," I think. She doesn't call anyone by nicknames even if everyone else has adopted them, unless the person in question uses it themself. (ex. Roxie's name Roxanne, but she prefers Roxie, so Mia calls her that.)
Roxie has a catchphrase: "Roxie Safety Tip: [tip]" This is something that I wrote on a whim, but ended up sticking. She also gives most of the other characters nicknames. Her texts tend to contain emoticons (ex: >:3c, 0_o, >w<) Her speech pattern alternates between dramatically archaic and childish/cutesy, like so:
“You!” She pointed at Emil, then spread out her arms. “Gaze upon my handiwork and understand what could’ve been.” Her shoulders slumped. “You could’ve at least let me dress Aiden and Junnn!”
Jun's speech is varying levels of Californian. In general, they use "like" as a buffer, among other things like "way" instead of "very". Sometimes, they really play it up to seem more airheaded. They use fingerguns every so often, and they only text in lowercase.
Aiden doesn't have any specific mannerisms that I can think of off the top of my head. Sometimes, he calls the captain "Cap'n."
Emil, on the other hand, has a bunch. He winks. A lot. There's been at least a few times where he leaves conversations with "Ciao!" More frequently than anyone else, he elongates the vowel sounds of some words. He pulls at the curls in his hair when he's in thought. Instead of turning around, he pivots on his foot. Like Roxie, he's also someone who uses a few nicknames. He calls his brother "Captain Bro," even though his brother rarely ever responds to that. I imagine he does the same with their father. He texts with a bunch of emojis.
The captain only ever refers to the other characters by their rank and surname, except for Emil when they're alone together. If he warms up to someone, his narration will refer to them by their legally given name (ex: Léonardo for Leon, Roxanne for Roxie). He also whips his rulebook out of his cape or hat when he needs to recite a rule, though sometimes he'll do it off the top of his head. He never calls the Interstellar Forces by its acronym.
Angelo never refers to his brother by name, only calling him Big Brother. If he gets to the point where a lump forms in his throat while crying, he can't speak and has to communicate some other way. Usually texting works, but if he's upset enough to be shaking, that results in typos. He also holds his arms when he's really upset.
