(Still working on this game save so not all of it is there)
Nilkas a Nord born in Windhelm, but his parents moved to Cyrodiil. After the Great War Nilkas ran to the safety to his home land, Skyrim and was captured by the Imperials and taken to be executed along with the Stormcloaks. But a dragon, Alduin attacked and he escaped with a fellow Nord named Ralof. The 2 escaped Helgen and ran to Riverwood were Gerdur, Ralofs sister asked him to go to Whiterun and ask for Jarl Balgruuf's help to send guards just in case a dragon should attack. So Nilkas ventured to Whiterun and met the companions and helped them kill a Giant, after which he was given a invitation to join the The Companions. So he went and Risen to the circle and then the Harbinger. Than he went and told the Jarl of the dragon attacks which led to him retrieving the dragon stone. So he ventured to Bleak Falls Barrow, after he got back to Whiterun he found out a dragon was attacking, so he went to kill the Dragon. After which he discovered he was Dragonborn, he learned to first word of the "Unrelenting Force" shout. and he was called to High Hrothgar were he learned about the voice and him being Dragonborn. Than the Greybeards sent him to retrieve the Horn of Jurgen Windcaller, when he went to the dungeon to retrieve someone already took the Horn, but left a note for him to go to Riverwood. So he went to Riverwood where he met a Delphine a Blade, and delphine wanted to know if he was really Dragonborn, so they ventured to Kysgrove. After which Nilkas killed the dragon and proved he was Dragonborn. then Delphine said they have to invade the Thalmor Embassy so Nilkas went out to venture Skyrim and got sidetracked. He went and ventured Skyrim, and then noticed a rise in vampire attacks, so he joined the Dawnguard and met Isran who sent him to Dimhollow Crypt to find out what the Vampires are looking for. There he met Serana, and took her to her Castle and met Lord Harkon, who offered him vampirism, Nilkas refused because he was a proud Nord warrior, after which he was banished from Castle Volkihar. Than he met Serana at Fort Dawnguard who wanted help to stop her father. After that he went on a adventure to get the elder Scrolls and eventually kill Harkon. After that Nilkas went and wanted to help Ulfric Stormcloak liberate Skyrim from the faithless Imperial dogs. After liberating much of Skyrim the StormCloaks marched on Solitude. After Nilkas and the rest of the Stormcloaks faught their way to Tullius, Nilkas gave Lord Ulfric the honor of killing General Tullius. and then after the Battle of Solitude Nilkas is now living in Windhelm adventuring Skyrim.