Master Kothas Sunlight was a battle mage during the war against the arch demon Karxus. Now that war is over Kothas choose to live a peaceful and quiet life as a potion maker and teacher. Even though he’s not living the life of a battle mage anymore, he still has the respect of the mage council, who calls him on their gatherings.
Master Kothas rose Nicholas since a baby. According to Kothas himself, Nicholas’s mother was a prostitute, who got pregnant during the war, from an unknown, presumably already a dead soldier.