Nero’s persecution of Christians is what Revelation is all about.
Nero came to power by killing his mother.
Besides torturing Christians, Nero had a habit of putting on animal skins and walk the streets of Rome at night alone and attack people.
He fancied himself a musician, and would give public concerts, and people would feign heart attacks, etc., to get out, because if they walked out he would not like that at all.
He kicked his pregnant wife to death because he came in late and she ask him where he had been.
He found a teenage boy that looked like his wife he had killed, castrated him, made him wear a dress and paraded him around as his wife. The teen wound up committing suicide.
It's a piece of religious literature, not an historical account. That ought to be obvious since it's a prediction of future events.