Oskar Olsen is a ghostly yet playable Sim who lives in Aurora Skies. He once was married to Anna Olsen, and after her death, he thought his life was over. He was wrong though, and his best friend Emil Olsson moved in with him to comfort him. After Emil's death, Oskar thought once again that his life was over. Yet this time, he was right. But his friendship with Emil was too strong and now they spend their afterlife as ghosts in Aurora Skies.
He shares his name with a male social worker, Angelika Olsen.