I so wanted to label this post - The Lost Prince - to keep up the fairytale theme but couldn't quite get the content to match up.
Anyhoo, in the comments to the Sleeping Beauty post Nicole mentioned she couldn't think of an Urban Fantasy male protagonist who had been raped, let only experienced the aftermath which seems to regularly occur to female UF protagonists.
I still can't think of a hero who has either received or had his powers triggered by a violent brutal act - rape, murder. There is one hero who I can think of who was raped and a few who come under being violated - but these are drifting away from urban fantasy and into paranormal romance.
SPOILERS FOLLOW SPOILERS FOLLOW SPOILERS FOLLOW
Ukiah Oregon (Wen Spencer) is raped in Bitter Waters (#3). He's given an aphrodisiac which causes him to have sex with someone against his wishes. This has ongoing consequences which carry into Book #4.
Atticus Finch (Wen Spencer) is mind raped in Dog Warrior (#4) by the Dog Warriors, so they can determine whether or not he's a threat. It's clear that this is a violation.
URBAN FANTASY/PARANORMAL ROMANCE
Butch (J.R.Ward) is tortured by the Lessers and violated by the Omega in Lover Revealed. However, this is coming closer to paranormal romance and away from urban fantasy. The scene doesn't have the intensity of the above books or the ones mentioned in the Sleeping Beauty thread - plus much of the action takes place off-page.
Zsadist (J.R.Ward) is raped and tortured during flashbacks in Lover Awakened.
Zarek is repeatedly beaten throughout his life and stoned to death in Sherrilyn Kenyon's Dance with the Devil. Essentially he does gain his powers through this happening but I consider this more PR than UF.
So the heroes who have suffered are out there. But it's harder to find situations which directly parallel those of urban fantasy heroines, or which have the page length devoted to the scene. I think Zsadist is an exception (as regards page length) as obviously his past is what made him into what he is.