The Protectors of Etheria is a stand-alone mod of the game Warlords Battlecry 3 (i.e. it can be run without having the original game installed - 100% free full game). It is an improved RTS/RPG game with new campaigns, quests, terrain, units, items, heroes, modding features and more. Beta versions available for download!
Is he some kind of advisor?
An adviser AND an excellent bodyguard (as the first chapter undoubtedly shown for everyone on certain occasions, I'm sure). Such companions will be available throughout The Protectors Campaign and sometimes within the Chapters section as well.