What are the goals of the redaegon? They have a plane shift ability, are lawful evil outsiders, and are not baatezu. I'd think that they would 1. leave their plane which was taken over by the baatezu and 2. set about killing things on the material plane. Also, why would redaegon's be allied with devils, as you said under their combat block? And I agree that rage doesn't belong on the haazekthok.

Where did you get that amazing picture? Don't tell me you drew it...