Izuku's Polycule
- All Amazons Want Hercules: Itsuka, Setsuna, Yui and Miruko mostly fell for Izuku for his physical prowess and fierce fighter spirit.
- Balanced Harem: Yui and later Momo are willing to let a girl join their relationship if she is interested on Izuku, one of or all of them.
- Battle Harem: All of them are badass girls, with Ochako, Momo, Jiro, Itsuka, Setsuna and Yui being among the best students of the Hero Course from both classes A and B, Miruko being the Number 6 Pro Hero, Nagant being the best sniper in the world, and Nejire being the best student among the third years, and the ninth wielder of One for All.
- Single Woman Seeks Good Man: Ochako, Momo, Yui, Jiro, Nagant, and to a lesser extent, Miruko, fell for Izuku mainly for his kindhearted, humble and helpful personality.
Midoriya Izuku - Gyro
Quirk: Orbit
U.A. Class Status: 1-A Hero Class
The main character of the fic. The divergence point from canon is that Izuku was born with a Gravity Master Quirk called Orbit, that allows him to generate and manipulate gravitational forces. After years training and refining his ability, he enrolls on U.A. High to become a hero capable of saving everyone with a smile, much like his idol, All Might.
- The Ace: Not only Izuku scored the highest place during the entrance exam with both villain and rescue points, he also scored first in the Quirk Assessment Test and finally, was the winner of U.A's Sports Festival.
- Chick Magnet: Izuku manages to gain the interest of plenty of girls either his age or older.
- Loved by All: Izuku's charismatic, strong and determined personality make him character beloved and respected by his classmates from 1-A, 1-B, the school staff and many Pro Heroes, who truly see his potential to be an amazing hero.
Kodai Yui - Rule
Quirk: Size
U.A. Class Status: 1-B Hero Class
Izuku's First Love and the unofficial founder of the polycule. Heir of the wealthy Kodai family, Yui is a student of Class 1-B of the U.A Hero Course. Her Quirk Size allows her to increase or decrease the size of objects, although it does not works of living beings.
- The Ace: The most applied student of Class 1-B and one of the most promising students of the first year, Yui has an incredibly sharp mind, versatile quirk and determined spirit. Despite only achieving second place at the Sports Festival, she managed to put up amazing victories against students such as Bakugo, Uraraka and Todoroki.
- Expy: With her Aloof Dark-Haired Girl looks, stoic personality and being fiercely protective of her love interest, many reviewers noted similarities between Yui and Mikasa Ackerman from Attack on Titan.
Yaoyorozu Momo - Titania
Quirk: Creation
U.A. Class Status: 1-A Hero Class
One of Izuku's closest friends and second girlfriend.
- Adaptational Name Change: Her hero name is "Titania" rather than "Creati". Doubles as a Shout-Out to Erza Scarlet, who she shares the same English voice actor.
Uraraka Ochako - Uravity
Quirk: Zero Gravity
U.A. Class Status: 1-A Hero Class
An outgoing young girl who befriends Midoriya after he saves her during the entrance exam. Her Quirk is "Zero Gravity," which lets her reduce the gravitational pull of anything she touches to zero.
- Gravity Master: Her Quirk allows her to reduce the gravitational pull of whatever she touches to zero through her fingertips, making it near weightless
- Nice Girl: She is a generally sweet person and is kind to everyone she meets.
Kendo Itsuka - Battle Fist
Quirk: Spectral Body
U.A. Class Status:1-B Hero Class
Class 1-B's class representative, a tomboyish girl who often has to keep Monoma in check.
- Adaptational Superpower Change: Her power is now Spectral Body, of which one aspect is changing the size of her fists like her canon Quirk.
- Blood Knight: Due to being a martial arts prodigy at a young age and winning plenty of tournaments with ease she feels that she's become too strong to be able to find an enjoyable fight. Part of her reason for attending U.A to seek out strong opponents.
- Not So Above It All: As down to earth as she is, she surprises everyone when she yells to Izuku to kick Shinsou's ass.
- Worthy Opponent: During the Internship arc she considers Izuku this.
Tokage Setsuna - Lizardy
Quirk: Lizard Tail Splitter
U.A. Class Status: 1-B Hero Class
A talkative Class 1-B girl who enrolled into U.A. through recommendations. Her Quirk, "Lizard Tail Splitter", lets her split her body into multiple pieces that she can control independently.
- Junior Counterpart: With body a related Quirk, a teasing nature and an outfit that consists of a Domino Mask and a Spy Catsuit that really shows off her curves, she is definitely one to Midnight.
- Lovable Sex Maniac: When Yui declares her intention to have sex with Izuku (after he goes Pervert Revenge Mode against Mineta at the Sports Festival) Setsuna claims she wants to join in. She also loves to stare at Izuku's abs whenever he is shirtless.
- Shameless Fanservice Girl: Is one of the few girls besides Ashido and Hagakure to not feel any embarrassment during the cheerleader prank. In fact, she even uses it to tease Izuku and is very pleased to find out he liked it.
Jiro Kyoka - Earphone Jack
Quirk: Earphone Jack
U.A. Class Status: 1-A Hero Class
An aloof, sarcastic, tomboyish but unexpectedly prudish student whose Quirk, "Earphone Jack", takes the form of elongated earlobes ending in jack plugs, which she can extend and plug into objects to catch extremely faint sounds or channel the sound of her own heartbeat into them in the form of powerful vibrations. She is a talented musician and is especially fond of rock music.
- Bizarre Human Biology: Similar to Ida and his leg mufflers, Jiro has actual earphone jacks as part of her body, which she inherited from her mother. She can even plug them into her cellphone and listen to music.
- Sensor Character: In team situations, she usually uses her Quirk to plug her jacks into walls or floors to listen for oncoming enemies.
Usagiyama Rumi - Mirko
Quirk: Rabbit
One of Japan's Top Ten Heroes. An aggressive young woman, she's a powerful pro who prefers to work alone. Her Quirk, "Rabbit", grants her the attributes and abilities of a rabbit, namely incredible leg strength.
- Adaptational Early Appearance: In canon she appears well after the Kamino incident. Here she appears during the Sports Festival.
- Kick Chick: Considering her rabbit-based quirk, of course this is a given.
- Tomboy and Girly Girl: Miruko is the Tomboy to Ryukyu's Girly Girl.
Hado Nejire - Nejire-Chan
Quirk: Wave Motion + One For All
U.A. Class Status: 3-A Hero Class
A smiling and welcoming U.A. student that has a child-like sense of curiosity, entering under Ryukyu. Her Quirk, "Wave Motion", enables her to release her vitality as energy shockwaves, though they lack speed due to coming out in spirals. She’s also the ninth inheritor of One for All.
- The Ace: Is stated by Miruko to be the strongest of U.A.'s Big Three which are a group of third-year students whose skill can rival even high-level pro heroes
- Constantly Curious: She asks everything that passes through her head and has no filter about when she might be getting too personal with her questions. She also asks things at such a speed she hardly even hears the answers to the first question.
- Flying Firepower: She can use her Quirk to fly and blast off energy bolts.
Haruka Dangan - Lady Nagant
Quirk: Rifle
U.A. Class Status: 1-A Homeroom and Heroics Teacher
Class 1-A's homeroom teacher.
- Abnormal Ammo: As part of her Quirk, she can use strands of her own hair to create bullets in any shape she likes.
- Adaptational Heroism: In canon, Lady Nagant was an Anti-Villain who ultimately came around. Here, Nezu manages to save her from the clutches of the HPSC allowing her to stay on the path of heroism.
- Adaptational Wimp: In canon as part of taking All For One's job to capture Midoriya, she was given the Quirk Air Walk, allowing her to walk on thin air. Here however due to never being imprisoned in Tartarus and being employed as a teacher in U.A, Nagant only has her original Quirk.
- Adaptational Name Change: Lady Nagant's civilian name is Haruka Dangan instead of Kaina Tsutsumi. It's justified in that the story was started before her canon name was revealed.
- Badass Adorable: Badass? She is THE best sniper in the world and one of the Top 20 Pro Heroes. Adorable? When Izuku and her were talking during an exercise, he couldn't help but think how cute she looks. Not to mention her adorable reaction when the students came back from Internship week. Look at her picture on this page.
- Organic Technology: Her Quirk transforms her right arm into a sniper rifle and she can create ammunition out of her hair.
