I am trying to figure out is this a narc or a personality disorder?

Well we met online we chated daily for a year before we met. We talked for 6 hours a day phoned 4 times a week. He had a gf he says of 7 yrs she was very mean to him and never liked sex and they only had sex 3 times a year. According to him. He came to visit me for a month things went well but there was a red flag that I ignored I know I know:(. He just lashed out at me I was in shock he said things I could not believe he was a whole different person. It lasted for a hour then he was back to normal. When he got back home things changed we talked the same amount of time but he was hanging out every weekend with his friends. Phone call when down to 1 time a week. He returned a second time and he had another fit kind a thing.It was like a tantrum of a 6 yr old. He was trying to hit me and bite me this was very weird to me because I never seen it before. Not from an adult a little child yes. Then things got really violent had to call the police 2 times he refused to apologize or even admit he did anything wrong. I am cutting this short because it is a long story just giving the cliff notes. I forgot also to mention before he came he said he was going to break it off with her. Well soon as he got home he said he went to break it off with her.I also suspect he is bi. Fast forward 4 years 2 kids later. The big fight he told me he only wanted sex from me and that it was over and he was never coming back. LOL he also stated that he wanted to be friends because of the kids and we may get back together when he is ready. I did not hear from him for a month he finally emailed me like nothing happend like we were child hood friends.I asked him to find a 3rd party to talk about the kids because I could not handle him any more. He stated if I did not deal with him than he won't pay child support. He has so far done the following. Gaslighted me, gossiped behind my back. Told his family and friends I was abusive to him. Slandered my name to his and my family and friends. This guy has tics mobile tics. He repeats peoples words and body languages. Tatrams(sp) victim blaming,Immaturity, always talking about succide. Starting fires and breaking my things. Is this guy a narc or some other personality disorder please please help thank you.