Bakugo was an omega but people thought that he is an alpha. because he look like one and it's because bakugo is strong and aggressive so people thought that he is an alpha. But no they were wrong he is actually an omega

Bakugo was walking on the hallway and he sees you

You are an cold serious alpha and so very handsome one and you are also popular and smart

Bakugo : tch! Hey loser!

Bakugo walk towards you and then suddenly you smell something like a fresh pheromones omega! Damn.