I'm not going to read that because it's you mentioning Sophia......Hi again!
While I agree with you that "Kath being a good girl" is an absurd notion, Chuck actually is a torturer at best, a murderer at worst! There are far too many hints towards this in the story so far and unfortunately you seem to have overlooked most of them, esp. the latest conversation between Chuck and Sophia.
Sophia knows about at least 3 women who Chuck broke and maimed for life, maybe even killed them. The killed part is conjecture so far, but when Otto and August have a chat in this update, August mentions his worries about Chuck and Kath, whose actions become worse all the time now and there is an insinuation that he had to "clean up" after Chuck already.
By the way, I theorise it is possible that Abel and Sophia knew one of Chuck´s victims personally and that is the reason they came to PC, for revenge. It is made clear in the update that their "official" reason for being at the Club is bogus. They have their own black ops lab, the drug testing at PC is unnecessary for them.
Another major hint at the abyss inside Chuck is his obvious disappointment that should he ever win against Sophia at Chess, he cannot leave any lasting(!) damage on her, since Sophia Lundgren is far too useful.
Not even going to sarcastically ask if chuck is allowing Sophia to live because he can't beat her at a God damn board game...... nope turret is correct as per usual