Ronin must love "Hell's Comin' with Me" by Poor Man's Poison. Anything by Poor Man's Poison, really. I'm pleased with the unanimously antagonistic nature of this character. He has a reason to do what he does so he's not unexplainable evil, yet that reason doesn't glorify or heroize the villain because normal people would not resolve problems the way Ronin would. Both internal and external factors have made this character vivid.
Ther hasn't been a very realistic character to me, I feel like Ther is a bunch of concepts that lacks pieces of linkages to complete the logic. Maybe that's intended and I'm crazy for trying to understand a mentally unstable fictional character.