What Can I Do About a Roommate That Oversteps Boundaries

My question involves a roommate in the State of: Missouri

In August I moved into a townhouse with 3 other roommates. There are 4 bedrooms, and we all signed individual leases. We all got along perfectly fine, until the one male roommate has decided to overstep some boundaries... One morning I was getting ready for school and the male roommate came into my room and demanded to discuss an issue he had with the temperature of the house. We all verbally agreed on keeping the house at 70 degrees and I noticed the night before that he had turned it up to 80, so I turned it down, and in the morning he bombarded me asking why I turned it down. I told him to get out of my room and he refused, I asked him for atleast 4 more times and he refused, so I took all my stuff and went to the bathroom to get ready, I locked the door. We have slit locks that can be easily unlocked with a coin or a fingernail, so he unlocked the bathroom door and just came on in... I feel like thats completely invading someones privacy. Is there anything I can do about this?

Also we had agreed on sharing the garage and rotating our 4 cars in and out of a 2 car garage. Today we asked the same roommate for the garage door opener that he's had since August 1st, and he refused, Me and another repeatedly asked him for the remote and he refused and then after I had asked him to not touch me back away from me and told him if he did I would call the cops, he grabbed my arm rather hard and pushed me down on the stairs and walked over me to go to his room. I obviously called the cops. Is there anything I can do to get him to leave?

If he does end up leaving on his own, is the rest of the house responsible for paying his rent if he doesn't find someone to take his room even if we all signed individual leases?

explain what you mean by you all signed individual leases. Is your lease for the amount you pay to the landlord and each of the others for the amount they each pay? On your lease, are you assigned a specific room or are you renting "the house"?

We weren't assigned rooms but we all signed separate leases on a house we are renting. Our rent together is 920 but we all signed leases to pay 230 a month.

if you each signed individual leases binding you to $230/month, what happens to another tenant is irrelevant. That is between them and the landlord.

as to the temperature and the garage; you have a problem unless it is addressed in the leases. You might ask the LL for direction. If he says it's up to you folks, if you cannot come to an agreement, there is little you can do to force your position on any other party.

btw: a huge problem I see with your situation; if you are not assigned rooms by your lease, there is little you can do to prevent anybody from entering any other room, including the bedrooms.

Thank you for reassuring me. My roommate told me that if he moved out that I would be responsible for his part of the rent. I feel better now