Y'know, these sketches of Hank make me think of something...
Personally, I never really saw Hank as a complete psychopath, so to speak. I mean, from what the Madness series shows, pretty much everyone in Nevada is awful (Jebus basically kills in order to prove he's the "savior", Auditor runs an entire dictatorship with an iron fist, Tricky is self-explanatory, and while Sanford and Deimos aren't that bad, from what the wanted posters display, apparently they're troublemakers). I feel like Hank is like this because of the frustration of putting up with virtually everything Nevada has to offer (which would make his goal in Nexus even more tragic).
sorry for the long ramble btw; just wanted to speak my thoughts