Eli's relationship to her birth family is a bit strained since they "just gave her away". She eventually comes around to forgiving them when her mother offers to teach her more about the powers she inherited. But she will always prefer Asgard to the Tuatha de Danann. Odin often uses her as a messenger between the two kingdoms.
Eli likes accessorizing with skulls and black feathers (much to the chagrin of her raven, Echo, who usually has to donate the feathers).
While she matches Thor in courage, Eli considers her actions and their reactions much more carefully than her older foster brother. She is more of an introvert and prefers solitude to crowds, usually working behind the scenes and away from the spotlight.