Nick's father name is unknown so far, but as revealed in the first chapter, he is the mayor of Nick's hometown.
He was last seen grounding Nick for the embarassement he caused on the town's parade float. His current whereabouts are unknown, and it's possible he may be deceased are since the town suffered a surprised invasion from the Org. But there are increasing rumours among the generals there may have been more to Nick's father than meets the eye. Maybe, Nick's old man may know something that would be vital to the Society.