Pyro:
Legend had it that when the great smith god Engineer left his forge unattended, the divine embers therein conspired to birth Pyro, who burst forth fully formed and fully armed from the flames. A fire god on principle, he was capable of both creating and controlling his element, and incidents of mysterious arson were routinely attributed to him.
Origins aside, Pyro was largely a mystery to the world of mercenaries; his cult was highly secretive and the location of his center of worship unknown. The face beneath his mask had never been seen - not even by his fellow gods - and he was sometimes referred to as 'the Faceless One'. Those who worshipped him were equally as enigmatic, dressing and speaking in such a way that made it difficult to determine gender.
Engineer was thought to be his closest friend and ally, a belief which may have stemmed from stories in which he is branded a monster and a demon by the other deities before the inventor god comes to his defence and persuades them otherwise. Engineer also held the distinction of being the only one who could understand the otherwise unintelligible god of fire, and where one is depicted wreathed in ash and flame as he dances, twirls, skips, and leaps playfully over the land, it is not uncommon to see the other beside him.
Pyro's uncanny ability to sense the Machiavellian chicanery of Spy meant that he served as the main buffer between the god of stealth and the trouble he caused for the other deities, and it was in this manner that he ultimately earned their trust.