Below I’ve listed my secondary gender headcanon for each member of Class 1-A, along with my reasons for putting them there. If you disagree with any of them, feel free to leave a reblog/comment explaining why; I love discussing this topic. The characters are listed in their seating order.

I have also listed my second and third favourite secondary gender headcanon for each character. If the word is crossed out, that means I can’t see them as that gender.

Yuuga Aoyama: Omega

Aoyama’s attention-seeking behaviour and intense care for his own beauty completely strike me as omega traits. He’s also quite sociable, in his own special way.

Beta, Alpha

Ashido Mina: Omega

Mina’s incredibly energetic, and very sociable. She has a tendency to latch onto people when she’s scared, and is super interested in her friend’s love lives. Those all strike me as omega traits.

Alpha, Beta

Asui Tsuyu: Beta

Recovery Girl pointed out to Deku that Tsuyu’s strongest trait was her ability to keep calm in stressful situations and ground her teammates, using the USJ incident as an example. Those are textbook beta personality traits, and the main reasons why I see her as one.

Omega, Alpha

Iida Tenya: Alpha

Iida is one of the most assertive members of Class 1-A. He’s not afraid to tell his classmates when they’re doing something wrong, and even stood up to Present Mic before the entrance exams. He took charge of the stampede in the cafeteria, an act that got him the class presidency. When Tensei was injured by Stain, Iida’s first reaction was to try and avenge him, and as I’ve said in some of my previous posts, I think responding to trauma with rage is an alpha response.

Beta, Omega

Uraraka Ochako: Omega

Ochako is very friendly, along with being bubbly, warm, and an optimist. She was willing to give Deku some of her points in the entrance exam as a thank you for saving her, and is also very family-orientated, as her entire motivation for becoming a hero is her drive to help her parents. She’s also more focused on the helping people part of heroism instead of the combat, as she wants to be a rescue hero.

Alpha, Beta

Ojirou Mashirao: Beta

Ojirou is a very calm person who normally doesn’t take leadership positions. He’s a hardworker, and has a deep set of morals, as seen when he refused his spot in the sports festival. He’s humble and reliable, and most people see him as “plain.”

Alpha, Omega

Kaminari Denki: Omega

Denki is by far one of the most social people in Class 1-A, and is a very energetic person. He’s always worried about his allies in a battle, and will only use his quirk if he’s positive none of them will be injured as collateral. He’s quick to panic in fights, and normally needs someone else’s encouragement to get his confidence back, like he received from Jirou during the USJ incident. His general excitable demeanour completely strikes me as omega.

Beta, Alpha

Kirishima Eijirou: Alpha

He idolizes “manliness,” and will not hesitate to put other people’s safety before his own. In the USJ incident, his first instinct was to try and help his classmates, and he only went after the villains when Bakugou convinced him too. In the final exam, his only plan was to use brute force. The second he learned Bakugou was in danger during the Forest Attack, he tried to go out to protect him. When Bakugou was kidnapped, he didn’t hesitate to decide to rescue him, no matter the risks. In the Overhaul arc, he got sucked into the Rappa fight thanks to his effort to protect Aizawa, and held his own against Rappa out of his desire to protect Fat Gum. Kirishima absolutely screams alpha to me.

Beta, Omega

Kouda Koji: Beta

Kouda is a very meek person, preferring to stay in the shadows and let other people take the reigns, and is quite shy and quiet. He doesn’t have a strong enough personality to be an omega or an alpha in my opinion.

Omega, Alpha

Satou Rikkido: Alpha

In the final exams, his only approach was to attack with brute strength alone, and he has the stereotypical build of an alpha. Unfortunately, because we haven’t seen much of his personality, that’s all I have to back my opinion up.

Beta, Omega

Shoji Mezou: Alpha

During the Forest Attack, he wasn’t willing to leave Tokoyami behind after Dark Shadow took over, even though it was incredibly dangerous. He’s quite protective over his friends, especially when they’re injured. He’s also very thick-skinned, as when people insult him about his appearance, he normally doesn’t react at all.

Beta, Omega

Jirou Kyouka: Alpha

Jirou is normally pretty chilled-out, but she’s more than willing to show people her teeth. If she’s uncomfortable with a situation, she lets people know immediately, usually with an earphone jack to their ear. In the USJ incident, she spoke confidently to the villain as she tried to plug into her boots, even though her plan failed. She took charge in her final exam, giving Kouda the courage to use his quirk. She’s also quite fond of insulting people, usually Kaminari.

Beta, Omega

Sero Hanta: Beta

Sero’s a great team player, as shown in the provincial licensing arc, the joint training arc, and the Heroes Rising movie, willing to put his life on the line for his friends but never taking the leadership position himself. He also has big stoner energy, which I’d associate with betas.

Alpha, Omega

Tokoyami Fumikage: Beta

Like Sero, he’s a great team player, who also doesn’t have a habit of seeking out leadership positions. He’ll take charge of situations if he feels like he needs to, but most of the time, he’s content with sitting back and following the lead of others. He’s definitely one of the most chilled out members of 1-A.

Alpha, Omega

Todoroki Shouto: Alpha

Todoroki’s stoicism, sass, and complete lack of care for other people’s opinions of him all scream alpha to me. As I said with Iida, I see reacting to trauma with rage as an alpha response, and up until the sports festival, he was overflowing with rage at his father. He’s also willing to do drop everything if he thinks his friends are in danger, as shown when Midoriya texted him in the Stain arc.

Omega, Beta

Hagakure Tooru: Omega

Hagakure has similar energy to Mina, in the fact she’s very energetic and incredibly interested in romance, but to an even greater degree.

Beta, Alpha

Bakugou Katsuki: Omega

He has a thin waist (which I’d associate with an omegan body type), is quite dependent on praise, especially from parental/familial figures, is skilled at reading people, enjoys cooking, and he cares about his friends; even if he doesn’t show it. And while I concede that he does show a lot of the alpha traits I pointed out in other characters, I don’t like writing him as one. This one comes down to more of a personal preference.

Alpha, Beta

Midoriya Izuku: Beta

If someone displays both alpha and omega traits, I normally label them as a beta. Midoriya is great with kids and makes strong emotional connections easily, but he’s also a BAMF who goes absolutely FERAL in some fights, as well as being unstoppable once he’s set his mind to something. That mix, along with his general demeanour and analytical habits, make me see him as a beta.

Alpha, Omega

Mineta Minoru: Alpha

Mineta constantly acts like he’s the head of the class, but because he’s such a weak little bitch no one takes him seriously. His entire motivation for becoming a hero is to attract girls, and he acts like he has a right to perv on his female classmates. He’s a textbook “terrible alpha” to me.

Beta, Omega

Yaoyorozu Momo: Alpha

Momo is the vice president of Class 1-A, and one of the class’ main leaders. During the USJ incident, provincial licensing arc, joint training arc, and final exam after she gained her confidence back after her character arc, she took charge of the situation and made the main plan to overcome the challenges presented to her, keeping a level head and instructing the people around her the entire time. Kendou Itsuka, who I also think is an alpha, sees her as her main rival, and Saiko Intelli (another alpha) considered her the greatest threat to her plan. Recovery Girl has pointed out that she’s going to be an amazing leader as a pro hero.

There’s a lot of Betas

But of course that’s good specially considering this is 1a

They’re not as territorial and possessive as Alphas and Omegas but that definetly doesn’t mean they’ll let you go if you touch their Alphas wrong or even look at their Omegas weird

Most of them work as mediators

Like Iida

Sometimes Ojirou does with the people outside the Deku and Bakusquad

Kouda is silent but he helps a lot when it’s really needed

Satou is like a favorite of everyone

Like it’s impossible to hate him

The omegas absolutely love his sweets

Shouji is always grounded so he’s a big part of what’s keeping the class intact too

Jirou is actually kinda Alpha at moments when she dismantles certain situations and everyone can only stare at her

Tokoyami is tired of their shit but willing to help regardless

Hakagure will do any shit for her bros (pack mates)

And like

Although Yuuga is the only Omega who isn’t in either squad everyone else pays attention to him too

And scent him in a casual and regular basis

Like they don’t even know they’re doing it they just automatically do it sometimes but there are some who do it more than others and purposely

Which includes Kaminari a lot

Whenever he feels like he’s not been scented enough that day from out of nowhere Kaminari just comes and sits next to him

Sometimes he starts by talking and whatever

Or making a omega piles as he pulls Tsuyu to come in

Or he brings other people together

Sometimes he just like outright sits next to him and buries his face on Yuuga’s neck and scents him

Which startled Yuuga most of the time

But then he takes his face off his neck and starts talking to him, or gives him something, or just smiles at the other and walks away like nothing happened

Kouda is surprisenly close to Yuuga considering how different their personalities are

Kouda sometimes brings his animals to the living room (mostly like bunnies and small animals)

He sometimes sits close to Yuuga if he’s in the living room too and Yuuga pets the bunny and leans against Kouda

If Kouda’s hand pulls Yuuga closer by the hip no one says anything

Yuuga will usually scent his arm softly before getting up saying a little goodbye to go do whatever he has to

To be honest Yuuga is close to a lot of the betas more than the Alphas

But one Alpha he’s most close to is Midoriya

Sometimes he’ll excitedly talk to Midoriya (mostly about cheese) and Midoriya will stand a little closer than necessary and they’ll brush by each other as they talk and then casually depart their different ways

Yuuga actually often interacts with Hakagure which mostly goes unnoticed by others

Yuuga likes Hakagure’s scent that’s slightly that of air and a hint of pure water

Hakagure is always happy to scent him a bit or just talk

Yuuga also hangs out with Shouji and Tokoyami more than people notice and sometimes when no ones noticed where Yuuga has gone

and they turn to find him and attempt to ask if he wanted them to scent him they stop to notice a smell that reminds them of feathers and the night sky as well as a smell of warm salty water

Shinsou also more than often touches Yuuga’s back when they’re talking and makes sure his scent stays on him

Yuuga also a more often than comfortable amount of times gets scented by Monoma from class 1 B

Not that they (1A) hate class 1B

I mean they’re not Monoma

But they do kinda low key hate Monoma

Some less low key than others (aka Bakugou, etc)

Although they know that Yuuga has pack bond with Monoma they can’t help but be protective of him when they see Monoma approaching

More than often Yuuga comes back with a scent that doesn’t belong to their class and everyone rushes to him and immediately realize with mild disgust and relief that it’s only Monoma’s scent

If Monoma ever lets tears drip from Yuuga’s eyes, that day, he’s dead to them

The bastard is cocky enough to enter their class to talk to Yuuga when they have plans and scents him in front of all of them

They do their best not to burst into flames and/or other elements/objects/etc

Yuuga likes Monoma’s company but softly wishes he would stop antagonizing his class