Cloud is... well. Cloud. Very awkward about showing affection physically until he's confident the other person likes him, but will lowkey move heaven and earth for you if he likes you.
He is the guy who will search every store for miles for the video game/book/Tamagatchi/whatever you want and bring it to you all, "hey, I found you a thing when I was out. .w."
Also, if he is comfortable enough with a person, he will absolutely fall asleep on them at some point. And, uh, probably not let go easily, because secret cuddlemonster.
Vegeta? It's all about sharing food and being extra-willing to beat the ass of any living being that dares lay a hand on you.
Also, if he will go to, like, an amusement park or a fancy dinner with you despite being uncomfortable with the idea? THAT IS TRUE LOVE.
The collective Sonic parade will very, very cheerfully take you to ALL THESE COOL PLACES THEY FOUND LOOK LOOK THERE'S SO MANY FLOWERS/THIS PLACE MAKES THE BEST SPAGONIAN FOOD/I CAN SEE YOUR HOUSE FROM HERE/ETC.
They are also terrible flirts, in that they flirt lots and are also incredibly cheesy about it.
Orihime will make you things and hug the shit out of you, she ain't even care, hug time.
Also here's a sweet cape with SPACE BUS pattern lining.
Jet? If you can break through the rough, proud, and brutally honest demeanor? Will also fucking move heaven and earth for you. And probably in less legal ways than Cloud would.
Jet takes care of his own, material possession-wise and otherwise. You need candy? Plutonium? An amazing foot rub? He will grant your wish. He may still be a loudmouth about it, tho'. \D
Cupcake's more along the lines of Vegeta, in that he cheerfully will fuck up a dude who messes with him and his own, but is also awkward re: showing affection. \D
He's gotten better about it as he's gotten older, but unless you're super-close, he's probably not going to be super-physically affectionate.
If you are super-close and also his wife, he will let you do anything you like to him tho' I mean uh
Writer, on the other hand, is definitely a hugger, and a kisser of cheeks (and other things if the relationship is like that), and very much a helper.
YOu lost your chao? ON IT. ONWARDS TO ADVENTURE!!
Ken is a shameless fricking flirt and actually pretty good at it when he has his eyes set on someone. Very much someone who'd sweep a person off their feet in a romantic relationship.
Otherwise, his affection's pretty quiet. Gossip and tea on a sunny afternoon, patting your back when you're sad, etc.
(Also, let's be real, like many of the characters here, he WILL happily Leeroy Jenkins his ass at someone starting shit with his and his own.)
(He's still working on that temper and doesn't always think fights through. oDo;;;; )