Custody/visitation

Hey everyone. I'm almost divorced, I have 2 kids under 3. Recently he has taken me to court to see the kids. He wants to have them on the weekends or at least visitation. However I don't want my kids to see him. He's narcissistic, manipulative, extremist and abusive emotionally and physically. Not once he changed my sons nappy and never cared. Before I left he cut a bald spot on my sons hair as a "joke" and that we the beginning of abuse to my son which I then left safely after to my parents house. I was harassed many days and reported to police he was arrested and put on bail till January which ended now. It's absurd how he wants to see the kids and how all of a sudden he "cares". He's just doing it out of bitterness and want to still feel like he has control over my life. What can I do??