>>24700586 (OP)
Everything by Ayn Rand. She has a mean rape fetish and lets it fill her writings.
You could also go with The Darkness That Comes Before, which is basically the mentat superhuman ubermensch MC in a drawn out fight with creepy rape aliens. The rape aliens rape a lot, but so does the MC.
But the author does a pretty neat script flip where you think there is going to be a long drawn out cat and mouse cloak and dagger sequence between two very competent MCs, but then the more insane of the two just up and gay rapes the other in front of his men to assert dominance. Bakker is a genius.
I mean, there is a lot of lore and Iliadic battle scenes in between I suppose.