Kai Ryugoa:

Hero name: Winter beast hero, Deerman
Quirk: Reindeer , a transformation quirk that lets him become a reindeer or reindeer hybrid. He can produce static charge from his fur and powers increase with adrenaline. However too much adrenaline will cause him to lose control and enter a beast state where all abilities are increased
Likes: Sweet food, hawks( the animal), soccer, archery, Tora Usagiyama, protecting people
Dislikes: sweet food, Hawks(the hero), Kamigo Bakugo, American football, bullies
Personality: cheerfulish, loyal, clueless
Weakness: he tends not to notice when his quirk destroys his costume, leading to awkward and comedic moments
Tora Usagiyama:

(Just imagine the small girl has black hair)
Hero name: Tunneling hero: Black rabbit
Quirk: Tunneling, she can create tunnels anywhere in 3D space(including air, not on living beings). These tunnels allow her to move at fast speeds and evade attacks. She can also open tunnels for others to use although only if she's within 30m of them. Her rabbit features are a result of her mother's latent mutant quirk. Due to this she has some super strength while kicking.
Likes: carrots, chocolate, Kai tatsuma(don't tell him), jumping, ponies(it's her favorite animal)
Dislikes: crowds, bullies, fighting, loud noises, being partnered with Kai, other girls flirting with Kai
Personality: shy, determined, forgetful.
Weakness: she's a scaredy cat
Kamigo Bakugo:

Hero name: Mystic hero: Paladin
Quirk: Physical Mirage: he can create ghost like manifestations, from lions to swords, that appear real to viewers. These manifestations can physically mess with non living objects(like cutting a tree) , but have unusual effects on humans
Drawback: people with a strong will can resist the effects of his quirk, puts strain on his bodies natural energy, meaning overuse ends in pain and injury
Likes: Kiki Midoriya , his dad, his uncle Deku, picking fights, katsudon(his great aunt inko's is the best), mocking kai's bad habits
Dislikes: Kai Tatsuma, candy, sitting still, losing.
Personality: pretty much Bakugo's

Kiki Midoriya

Quirk: gravity control; she can decrease or increase the gravity on any object she concentrates on by snapping her fingers . It goes back to normal when she snaps again
Drawbacks: she can only use it on 3 things at once and she must have total concentration. Overuse causes her to puke rainbows(shrug)
Likes: pulling pranks, her parents, teasing Kamigo, swimming, mochi
Dislikes: heights, dreary people, homework, failing
Personality: Just like Mina

A/N: and there are your 4 main hero players in this new fanfic. There will be more characters, but these are the most prominent. Also I won't add any lemons or stuff like that because I share this account with my little sister so.. anyway have fun and I'll be back in about a month with the next chapter.