I'm still working on rounding out some of my characters' quirks and stuff, so here are some stand out ones for some of my comics' characters.
Selena: Speaks in a very archaic dialogue with a lot of "thees" and "thous" along with referring to herself with the royal "we" due to thinking that it makes her sound more regal and gives her more gravitas. Namely because she read a book like that once after waking up from her amnesia and that's how she thinks "fancy" people talk....
Fubuki: She will obsessively clean her blades when nervous. She also secretly really likes to pull pranks, practical jokes, and surprises on others to keep her ninjutsu skills sharp.
Zephyr: Zephyr will often pretend to be a flamboyant, air headed coward to let peoples' guard down and assume that he's nothing really to worry about. It's a skill he learned to keep a low profile during his galactic travels.
Flare: Flare hates sugar and sweet things in general and is actually super-sduper insecure about himself and his masculinity. So he'll often times try to go out of his way to prove that he's "cool" or "Strong." Be it by drinking his coffee black, not eating sweet things, or by having his food as spicy as possible. (Though that's just kind of a normal Fire Dragon thing.) Also, he likes to drink hot sauce straight up and eat peppers in the same way one eats apples.
@Chita Let's hope Khaus never meets Auster at an Earth Dragon meet up then..... XD
Edible Green Tea:
Yvonne: Yvonne fancies himself as a master of disguise and renaissance man of sorts. Namely because he gets bored easily and wants to learn as many skills as he can so he doesn't feel unprepared for any situation.
Sparky: He's a dog with an inexplicable Jamaican accent. Is that not quirky enough for you?
Charlie: He's Charlie. Enough said.
Boreas Starwind: He loves ice cream. So much so that he opened up an ice cream parlor just to have an endless supply of it for himself. He does try to hide that fact to save face and he'll often over compensate by exercising a lot and by eating a lot of healthy super foods as well. He also hates spicy food given that it messes with his ice powers. He also cries incredibly easily. Like, he'll do it at the drop of a hat should he let his guard down enough. Gives great (if chilly) hugs, too.