Aerin is an Imperial residing in Riften. He rescued Mjoll the Lioness from outside the Dwemer ruins of Mzinchaleft and nursed her back to health. He spends most of his time following her around. He frequently expresses the desire to travel outside Riften, to see if things are as bad everywhere as they are in Riften. He seems a bit oblivious, having missed quite a bit of scenery on his random walk to Mzinchaleft and back.