Charlie is a mercenery and the best one around. He follows the money and the advantage. When he saw that GK was goin to hold its own he decided to take advantage and talk with hamster even though his troops were engaged with GK. Now that GK is the powerhouse Charlie will want to offer his services and always be on the strong side till it looks grim and back off. He never gets too invested in one customer or side and dosent care if they win or lose as long as at the end of the day he is still in charge of his kingdom and a little richer. If GK can get Stanley's head out of his own boop they will side with Charlie and use his advantage to move on toward dominance. Then worry about the sleeping beast that is CharlesinCharge when he is the only problem left or he decides to start something himself
Would you hire someone who, when he's hired to defeat you
, actively sabotages his current side so that he can gain? It'd be safer to kill him with a fight than put him on your side, even for free. If he hadn't backstabbed the RCC before the pass ambush, the RCC would've killed Stanley and ended the war. (As it stood without
the Archons, they almost killed Stanley.) What'd he do it for? To see if Parson was as smart as he thought he was, and worth capturing.
Additionally, this seems to be the very first time Charlie's gotten his teeth kicked in, and we haven't heard from him at all since the Volcano, so he may not be open to a deal anymore.