my character got stolen and became far worst

got reminded of this story a few weeks ago. CW: violence, torture and mentions of SA

this all happened around 2013˜2015 when i was in high school. my friend started a new campaign and i was invited, together with some other people not relevant to this story, but my friend in question who i will call Monster (inside joke, hope he reads this and see the old nickname). Monster is a stepbrother of a good friend of mine and became part of the group very fast even though he went to a different school and was two years younger than us.

my character was called Doctor, he was a necromancer/medic that wore a plague doctor attire. i played him trying not to be sadistic in anything he did but at the time it played a lot like the Medic from TF2 due me being a teenage boy who took himself too seriously.

the campaign didnt pan out, i think it went on for some ten sessions maybe less. around that time we were finishing high school so we didn't play together. Monster eventually went on to play with some of our other friends... with Doctor. im not gonna be here and say it was a very original idea of a character but come on it must have been a couple of months from the end of that campaign and the start of the other. this one went on for longer than ours.

some time later, i met up with some friends from that group and they started telling me about that campaign and Monster's character and that was when i noticed the similarities, but it didn't stop there. they hated Doctor (kept the same name, btw) because Monster decided to play him as psychotic lunatic that started killing people out of the blue. they told of the time Doctor decided to poison a beer keg and gift it to some homeless people, or when he tortured a prostitute because he 'payed for her time'. being a teenager i just shruged it, trying to look tough and all. then came the bombshell: Monster made Doctor kill a father in front of the daughter and then he wanted to kidnap the kid to have her as a personal slave, implying VERY bad things to do with her. the dm, one of the people telling me the story, said it was enough and told Monster to retire that character.

i was reminded of it because my friend, Monster's stepbrother, was telling me that he got accepted in a local hospital to start working as a nurse. that sparked the memory of Doctor in us and everything that went down at that time. i still talk to Monster, he eventually became an stable person after doing some therapy and putting his aggression on League of Legends instead of his fellow rpg players