Ive mentioned it before, but Ironus subconscious posing like jojo.

Jin gets up at the crack of dawn and does her daily exercises before cooking breakfast to have it ready for Mary when she wakes up.
Mary got a habit from her mom where she'll start speaking Japanese in the middle of talking, especially when a little mad.

Fausto: Has a habit of biting things, it strengthened his teeth so he can bite metal with relative ease but it does cause tooth aches

Balei: Dancing before/while doing a task, helps her relieve stress and makes working a lot more fun! She’ll do a lil shimmy if she’s sitting!

Briar likes to tap her nails on hard surfaces like her desk, to the annoyance of others.

She also likes to flip her hair for no reason at all.

Odd almost always, be it subconsciously or intentionally, fiddling around with something with his fingers; more often than not he defaults to drumming his digits on a nearby surface (normally in some sort of rhythm), but he'll also flip a pen around, move a coin through his finger gaps, and occasionally (if the other person's fine with it) he likes to play with people's hair.

He also tends to bring an umbrella with him wherever he goes, regardless of how nice it is outside.

When she’s relaxed, Mariah tends to hum absentmindedly! Or when she’s deep in thought, she’ll run her fingers through her hair.

Andre refuses to leave home without eye makeup; he always applies red eyeliner to resemble Zoroark’s eye markings.

• Yorra will take one piece of cutlery from every restaurant she goes to
• Lindow eats certain foods the wrong way
• Emille, Eva and Hope do the Guzma thing and yank on their hair when stressed
• Judgement and Xavion both have overly-formal ways of speaking the Zircan language but whereas the latter does it to put himself above the rest, Judgement just isn’t familiar with all the slang terms and intricate quirks so it makes some of his more casual speech (or jokes) wildly miss in tone.

Jasmine: when she is doing something automatically like house chores or walking home from the grocery store she starts singing children movie songs in a whispering almost creepy way

Andres: Hs's constantly squinting his eyes since he never wears his glasses

Ace: while thinking he covers his mouth and takes a puff from his cigarette even when he isn't smoking

Wily constantly twirls the loose strand of hair he leaves out, which is the only reason it's curled.

Mahra will do that spinning pen thing when she reads, but with telekinesis.

Polly sometimes moves out of the way for ghosts to pass when she's not paying enough attention to notice they're not alive.

Tyler would normally like to scale large buildings or objects out of habit, he feels more comfortable taking in the view and everything. He once did this in Elementary school by hanging off the School's window ledge, he easily climbed down when the firemen came-

So don't be surprised when Tyler would drag you to the top of a high af building or tree, because he probably wants you to take in the view too and just chat

Ky's really bad with names, so when she first meets someone, she'll say their name or nickname five times and then proclaim it!

The longer she tries to think about something she doesn't understand, she'll lean to one side, at first with her head, then her whole upperbody, and if nobody clears it up in time she'll just fall over.

And when she gets particularly close to someone, she'll paint a finger or toe nail with their favourite colour! Essentially attaching that specific colour to them and her memories!

Elio pulls a Nero and says "Umu" when he's ecstatic or pleased about something.

It's a verbal tic he inadvertently developed post-emotional discovery, partly rooted in his usual and childish responses to his older brother Ardyn when he was a toddler: a one world gibberish response («Ungh», «Ah», «Heh», etc.) or him rapidly shaking his head in certain directions.