Who is Vago from Storm Thief and what is their importance?

Vago the golem is a created creature, looking like a half-man, half machine, with great leathery wings folded upon his back and metal fins sticking out from his spine. With elongated limbs and mechanical internal workings weaving into his flesh, the golem is far quicker, stronger and tougher than the average human, and is a monstrous sight for most of the 'ordinary' people that he meets during the course of his adventure in The Storm Thief.