Bakugou Katsuki

Bakugou was the last student who survived the war against All for one and Shigaraki tomura deku died in his arms because of that the quirk of one for all shifted into bakugou that caused both all for one and Shigaraki to die

the other villains were taken away, most of the heroes survived so UA could continue but bakugou was beyond hurt he had a lot of scars covering his body, a burn on his face causing his eye to be blind he also lost his hearing in that side he had a hearing aid

During a fight with a couple of thugs he was transported to another Dimension where UA doesn't exist he was saved by Avain when he was falling to his death he wanted to die, Avain noticed that he looked very hero like

Database keeps his secret of being from another Dimension, one for all and his Past he teaches hero training as he was one of the best in his past class

he was one of the favourite teachers but no one knew of him before the school Introduced him as an underground hero from Australia

Bakugou was strict in his classes as he always does, he teaches a good lesson but when the hero training happens he is having serious panic attacks of the past, he takes it all on himself database knows of this, He teaches Kol and Davis a serious lesson

Katsuki was out of hero outfit as he had heard the Davis had been kidnapped he helps them