I couldn't agree more. Up until this episode, I thought Fern was the biggest hate sink in the game, being a massive, egotistical jerk who never gets his comeuppance.
Then I met Blake.
Blake is all the things that make Fern a horrible, horrible person, except he's actually done things just as horrible as he is. He joined an organization dedicated to destroying an entire region. He left an entire town to starve. He lied to a little girl, claiming he would be a loving dad, only to cruelly use her as a tool for his own end. He pushed his own brother off a freaking cliff.
And the worst part? Just like Fern, he never gets comeuppance. According to Cal's dialogue atop Pyrous Mountain, Blake was always pampered as a child, and everything he did was praised. As an adult, the entire town he tried to starve still treat him as a celebrity. At the end of Episode 14, he gets away unscathed, still perfectly willing and able to carry out Team Meteor's goals.
Blake is one of three characters in Reborn (the others being Fern and Solaris) whom I can find no redeeming values. I want him and the other characters to suffer a major breakdown at the end of the game, or at least get some form of cathartic comeuppance. You don't try to murder your brother and get away with it scott-free. Arceus would not allow it.