What to do here /u/SpaghetP DnD: Roll for Initiative!

A few months ago, I joined a campaign online with 3 other players and the DM on a discord server in which they already knew eachother, the third guy wasn’t around for the first session as he just wasn’t around at that time, and the DM instead of rescheduling or something decided to just, do it anyways, at the time I thought this was odd but I didn’t think much of it, the first session went well, we all had fun.

When we did the second session the third guy was there and showed us his character. He was a lawyer(wizard) who casted spells by debating people, and he and people around a 20 something radius around him couldn’t see the spell and it just looked like the monsters he beat and stuff just walked away.

I thought it was cool until the session started, the first thing he did was walk up to someone in a library who was alone by himself and ask him “which weapon is the best weapon”, talk to him for a few seconds and then say “I cast acid blast” on an innocent commoner who had done nothing wrong (his character wasn’t aware of this and just thought the guy got tired of him or something) after he murdered this commoner for no reason at all he spent the entire rest of the session trying to make us not find the melted corpse, by staying in the library (the way his “people not being able to see his spells thing” worked was you had to pass a wisdom save everytime you entered the radius”) so when he had to leave the library and the corpse was now able to be seen, one of my party members entered the library and found the corpse, logically they called the village authorities and tried to find the murderer, the rest of the session was basically he trying for us not to be able to find out he was the murderer (again his character was NOT aware that he killed someone) so this was also meta-gaming.

While this was happening one of my party members just wanted to continue the campaign and do a quest one of the npcs had given us, so at one point after waiting for 20 minutes he just left the call and the murderhobo left so that this guy would come back.

After this we did the quest without the murderhobo and we actually had fun for a bit and ended the session there, we decided to let the murderhobo come back with a different character next session.

He pulls up with a min-maxed character that took 5 minute turns, did 60 damage per turn at level 3 and didn’t role play at all, we spoke to him again about his character being over powered and how we weren’t having fun and he responded by offering to help us min-max OUR characters, and that it “wasn’t his fault he was too good at dnd” after this me and the other player have basically just said we couldn’t come to sessions in order to play with this guy since we’ve tried to talk to him numerous times and he refuses to play a normal character but the DM doesn’t want to kick him out because they’re friends (which is understandable) I’m not sure what to do here or if I should just leave the campaign, which is a bummer because I had a lot of fun when this guy wasn’t around.

A few months ago, I joined a campaign online with 3 other players and the DM on a discord server in which they already knew eachother, the third guy wasn’t around for the first session as he just wasn’t around at that time, and the DM instead of rescheduling or something decided to just, do it anyways, at the time I thought this was odd but I didn’t think much of it, the first session went well, we all had fun.

When we did the second session the third guy was there and showed us his character. He was a lawyer(wizard) who casted spells by debating people, and he and people around a 20 something radius around him couldn’t see the spell and it just looked like the monsters he beat and stuff just walked away.

I thought it was cool until the session started, the first thing he did was walk up to someone in a library who was alone by himself and ask him “which weapon is the best weapon”, talk to him for a few seconds and then say “I cast acid blast” on an innocent commoner who had done nothing wrong (his character wasn’t aware of this and just thought the guy got tired of him or something) after he murdered this commoner for no reason at all he spent the entire rest of the session trying to make us not find the melted corpse, by staying in the library (the way his “people not being able to see his spells thing” worked was you had to pass a wisdom save everytime you entered the radius”) so when he had to leave the library and the corpse was now able to be seen, one of my party members entered the library and found the corpse, logically they called the village authorities and tried to find the murderer, the rest of the session was basically he trying for us not to be able to find out he was the murderer (again his character was NOT aware that he killed someone) so this was also meta-gaming.

While this was happening one of my party members just wanted to continue the campaign and do a quest one of the npcs had given us, so at one point after waiting for 20 minutes he just left the call and the murderhobo left so that this guy would come back.

After this we did the quest without the murderhobo and we actually had fun for a bit and ended the session there, we decided to let the murderhobo come back with a different character next session.

He pulls up with a min-maxed character that took 5 minute turns, did 60 damage per turn at level 3 and didn’t role play at all, we spoke to him again about his character being over powered and how we weren’t having fun and he responded by offering to help us min-max OUR characters, and that it “wasn’t his fault he was too good at dnd” after this me and the other player have basically just said we couldn’t come to sessions in order to play with this guy since we’ve tried to talk to him numerous times and he refuses to play a normal character but the DM doesn’t want to kick him out because they’re friends (which is understandable) I’m not sure what to do here or if I should just leave the campaign, which is a bummer because I had a lot of fun when this guy wasn’t around.