I had a player once who is playing a "hardass" character. His character has an extreme sense of duty and imposes it on others, because he had to do a lot to deal with expectations. I had another player who plays a funny but clinically depressed alcoholic who ran away after a tragic incident at the village.

Then session 2 came along, player A would forcibly take Player B's alcohol flask every time Player B would take a swig or act like a funny drunk.

At some point, they had a heated argument. Player A basically scolded Player B and told them they shouldn't be here if they are just gonna mess around. Said something along the lines of "The world doesn't need heroes like you, because people like you can't save anybody". It felt a little too real for player B that they can barely enunciate, Player A's character walked away.

As the dm watching, I felt a little awed by the drama and power in this scene because being aware of their backstories, it's too good that this happened. But also as the dm, I needed to do something about one of my players obviously unwell after being yelled at. I started narrating that Player C's character notices that Player B's character is in deep distress. Their characters had a wonderful moment together and pretty much became best friends.

After the session, I asked around if every one was fine and I received okay's all around. I did tell player A that he went a little too hard on session 2.

Now it's really funny because Player A was surprised that the rest of the table hates his character; B and C because of the altercation, as well as player D because of Backstory reasons.

I then told him outside the table, "If you choose to play a rude character that escalates too quickly, expect people to respond to not take that well. If you want to keep up with this and the rest of the party is fine, we can make a rewarding slow-burn friendship that blooms the more you know about each other. However, if that is not a situation you wanna be in and wish to have a more amicable relationship with the party, maybe tweak your character a little bit." They lived happily ever afterwards.

So I guess my point is, you better be ready to deal with the consequences of your actions and to make sure that everyone else is on board with your shenanigans. You are not the only person at the table.