New York Times article on characteristics of men who commit rape:
[R]epeat offenders often tell similar stories of rejection in high school and of looking on as “jocks and the football players got all the attractive women.” As these once-unpopular, often narcissistic men become more successful, he suspects that “getting back at these women,
having power over them, seems to have become a source of arousal.”
https://www.nytimes.com/2017/10/30/health/men-rape-sexual-assault.html
The article mentions that studies on who commits rape suffer from a lot of methodological challenges and there aren't firm conclusions about who is/will be a rapist. But that passage about narcissistic nerds stood out. Other "risk factors":
"Heavy drinking, perceived pressure to have sex, a belief in “rape myths” — such as the idea that no means yes — are all risk factors among men who have committed sexual assault. A peer group that uses hostile language to describe women is another one."