You are a beta. You like the anominity you get from being a beta. You can do anything you want and no one notices. It also helps that your that the son of Demeter, the most underated olympian goddess. However for reason everyone has started focusing on you. You dont like it.

You are the only omega student in slytherin. You are also a half blood with a muggle maternal parent. You have been hiding your omega status out of fear of what would happen to you. However the Weasley twins some how got into the Slytherin dorms and went through your things. They found your suppressants and blockers. Now all of Hogwarts knows your an omega.

You are an villain and an omega. You became a villain so no one would know you are an omega and hurt you. Most people treat omegas horribly. You've just been captured by pro heroes and UA students. After going through your things they find your suppressants and blockers. Now they know you are an omega.