Alpha
Alpha is the top. They are the strongest. They go into something called a rut. This usually happens once every month. They can impregnate betas and omegas of both genders but a little chance of getting pregnant for female alphas. Rut suppressants are very important to alphas . The following are alphas:
Bakugou katsuki
Kirishima Eijiro
Shoto Todoroki
Omega
An omega is the species with the strong pheromones. They go into heats( period is replaced by heats for female omegas). The male omegas are very important and are advised to stay home when their in heat to avoid getting raped(mostly by alphas) by strangers because of their sweet smells and how much they release but the females don't necessarily have to. Heat suppressants are very important to omegas. The following are omegas :
Ochako Uraraka
Izuku Midoriya
Kiminari Denki
Betas
Betas are the normal people with heats but not as strong as the omegas. They can get omegas pregnant. The following are betas:
Tenya Iida
Tsuyu Asui
Mineta
Rut
A rut is a period of time (one week in each month) which alphas are completely and utterly sex driven. Omegas are their main targets. They can become aggressive if the victim( beta or omega) is resisting mating with them. However they will only turn aggressive if they are naturally aggressive (example shoto will never get aggressive because he isn't naturally aggressive).
Heat
Heats are what omegas go through. Heat needs to be suppressed in order to avoid getting raped by strangers or people close to them. Heat is a personal scent that a omega or beta has that attracts alphas. It is released through the sweat glands.
Heat suppressants
These are very important to omegas and betas of both genders it is used to banish the omega or betas scent for up to 5 hours. By accident, some suppressants are 'defective ' and may do the opposite and widen the sweat glands. The omegas and betas may not be able to close them for a while.
NOTE: anything not mentioned now will be mentioned in the future so don't worry if I miss a few characters names.