This isn't an incorrect quote so just skip past this if that's all you're here for. Anyways. In the previous chapter I showed a photo of my version of Hero Killer: Stain and someone wanted backstory so here we are. This is what he looks like:

(My friend @ macckenchiz on tumblr drew this and I coloured it and did the doodle. go follow them, they're awesome)

Anyways. Here's his backstory. Just a warning, it's all over the place and very unorthodox. So, to begin with he looks incredibly different, he has the same costume but he has a different quirk which gives him a mutation. He went to UA and was a foreign exchange student from America. He's friends with ms joke and was with Aizawa for a bit in school. He was mute as a child and learnt to speak once he went to UA. He figured it out by copying people's mouth movements (and getting Ms Joke to make him laugh with her quirk). It took him until the end of their second year to be able to speak completely and even now, his voice still occasionally gives out. In the summer of his second year, his house in America got burnt down by unknown causes while he was visiting. His parents died but he and his sisters got out, though not unscathed. His older sister (now the pro hero cow lady) was too busy with hero work and a side job to look after their younger sister (pony Tsunotori) so stain had to take her in to UA with him. She was about 3 at this time. It was the pro hero Captain Celebrity that pushed him into his hero killing this time, as the pro, despite being one of the top heroes in America, saw what was happening and that the house was burning down, yet refused to help, even after stain begged him. He now lives in Japan on a small farm with Pony and ms joke frequently visits. She honestly doesn't care too much about his hero killing cos, ya know, she doesn't take anything seriously. Pony still attends UA as stain encourages her to be a true hero. He joined the league at Shigaraki's request so..second season, I believe? And has stuck with them since, while this caused a bit of friction between him and pony, they both eventually settled it and all was ok again.
But yeah, that's basically it. (Also contrary to the musharna in the other drawing, he doesn't actually have any Pokémon, that was just to look cool)