>>36195893Realized he was better than being a shitty Snagem Grunt. Really, if you think about it, he's just a hero of circumstance since Ruri latched on to him early on as a morality pet. Most of the events in Colosseum could be seen just as much part of his vendetta against Snagem (and Cipher by correlation) as they were 'heroic'.
We don't know why he defected in the first place, but its hard to say it was the most noble of reasons with THAT kinda grin.