A really interestingly written OC wife was Luna. She was an artist who was turned into a vampire. Her creativity was still very much a part of her as a vampire, and she used it to create beautiful things in the Mikaelson mansion. She had a very tender relationship with Elijah, and her character was explored in depth in terms of how she coped with the eternal life of a vampire while still holding on to her love for art. There was also Nora, an OC who was a powerful seer. Her visions often guided the Mikaelson family, and her relationship with Elijah was filled with mystery as she sometimes knew things about him that he didn't even know about himself.