Eliza Danvers was a brilliant scientist living with her husband Jeremiah Danvers in the small town of Midvale (location). She, along with her husband, helped Superman understand his own abilities at one point in time. Together they had a daughter, Alex Danvers.
Taking in Kara
Eliza asked Jeremiah to come in to keep her company while she wrote her dissertation. They later caught Kara and Alex sneaking back in, after the two went flying. Eliza, along with Jeremiah, lectured the girls on the danger of what they had done, with Eliza coming down particularly hard on Alex, as she was supposed to be Kara's big sister. They soon after sent the girls up to their room after hearing a knock on their door. Answering it, they were introduced to Hank Henshaw of the D.E.O. who wanted to study Kara, as Superman refused to cooperate with them. However, Jeremiah offered to work for the organization and provide it with all of his research instead. Jeremiah later died working for the organization, and she told Kara and Alex that he died in a plane crash.
Visiting National CityEliza later visited National City for Thanksgiving, blaming Alex for not stopping Kara from revealing her superpowers. At a Thanksgiving dinner, Eliza commented on Alex's wine consumption, and later became outraged when Alex revealed to her that she worked for the D.E.O.. After several blackouts caused by Livewire, Eliza had a heart-to-heart with Alex, revealing why she was so tough on her in comparison to the way she was with Kara. The next day before she left, Eliza told both Alex and Kara that she was proud of them, though she told Kara that there was room for improvement as Supergirl. She then revealed to them that Jeremiah had died working for the D.E.O. under Hank Henshaw, and not in a plane crash as they had been told.
MyriadAfter they have become fugitives, Alex and J'onn come to Eliza's house and learn about what is happening in National City. After that, Alex and J'onn went back there to help Kara, however, Non managed to put her under the control of Myriad, forcing her to fight Kara with the intention to kill her. Alex almost did it, but was stopped by her mother (who was taken in the city by J'onn) who told her that she believed in her, snapping her out of the mind control.
Later, Alex told her mother that her father is alive and is in a secret laboratory named Cadmus, where they intend go to save him. After Supergirl saved the Earth, Eliza was present at Kara's apartment during the celebratory dinner they were having. However it was interrupted by a pod flying in the sky catching their attention, causing Kara and J'onn to leave to check it out.
Medusa virusEliza returns to National City to celebrate Thanksgiving with her daughters and Kara introduces her to Mon-El, who immediately tries to get close to her, prompting Kara to think he is trying to hit on her adoptive mother, however Eliza told her he is acting that way because he likes Kara. After Mon-El contracted the Medusa virus at the bar, Eliza examines him and informs the others that despite his condition being stable, he was infected, and that the virus is not transmitted between organisms. She also adds that the protein structure of the virus indicates that the virus is from Krypton. Later she reported that if they don't find a cure, the virus will kill him. Kara gives her a crystal from the Fortress containing the information about the virus, and Eliza with Alex, started to work on a way to cure Mon-El.
Later, Alex managed to come out as a lesbian to Eliza, saying that she was afraid to disappoint her, however Eliza replied that she could never do do, and embraced her. The next day, Eliza creates a cure saving Mon-El's life and draining J'onn's blood from all the White Martian's blood cells, returning him to his normal Green Martian form.
After Jeremiah was apparently rescued from Cadmus, Eliza was informed and came to National City organizing a family dinner celebration in Kara's apartment. When they were alone she told Jeremiah that although she still loved him and was happy for his return, she felt like she didn't know him anymore and she would need some time before adjusting to having him back in her life. Later, after Jeremiah betrayed the D.E.O., Alex informed Eliza personally.
When Alex and Maggie had announced their engagement, Eliza went to National City to attend their shower. Eliza noticed that Maggie didn't have pictures of herself as a teenager and she learned that Maggie's father had kicked her out after she came out.
Visit from her children
When Alex and Maggie had split up, Eliza was visited by Kara and Alex per the former's suggestion that they try and get away from everything for a bit. Eliza went to Kara and told her that Alex was going to be a mess for a while and Kara would still be a mess for a while herself after her separation from Mon-El. Kara told her that she was doing better but Eliza told her that she didn't have to be doing better and she was allowed to be a mess. However, Kara told her that too many people depended on her for her to be allowed to be a mess but Eliza told her that was a convenient excuse.
After the girls stumbled on an old telescope and remembered their old friend Kenny, Eliza stumbled onto them both seeming to be a touch happier. She bid them both a loving goodbye as they moved to return to National City.
Eliza is kind, caring, selfless, compassionate, intelligent, and has a sense of justice, honor and good morals, she is also one of the few humans who does not have an anti-view on aliens in general; as evidenced by the fact that Eliza raised Kara Danvers as her own daughter, despite the latter not being human.
Due to the fact that her husband Jeremiah Danvers was forced to work for the D.E.O., in order to prevent Hank Henshaw from taking Kara away, in attempt to use the latter and abuser as their own weapon, she does not trust the government in general.
- Genius-level intellect/Expert scientist: Eliza is highly intelligent, this is evidenced by the fact that she managed to come up with a cure for the Medusa Virus, by reverse engineering the virus; despite the fact that it was created by Kryptonian scientists Jor-El and Zor-El whose intellect is far more advanced than hers. Eliza also managed to cure J'onn J'onzz of his transformation from a Green Martian to a White Martian.
- "Duet" (mentioned)
Adventures of Supergirl
Behind the scenes
- In the DC comics, Kara's adoptive mother was named Edna Danvers in the Silver Age, before the later, more recent version was renamed Sylvia Danvers.
- Eliza Danvers, an in-part original character specifically created for the show, was incorporated into the DC comic book universe, first appearing along with Supergirl in Superman/Wonder Woman #29 (July, 2016). Starting with Supergirl: Rebirth (October, 2016), she along with her husband, are introduced as agents of the D.E.O. and the adoptive parents of a teenage Kara Danvers.
- Helen Slater previously portrayed Supergirl in the 1984 film of the same name. She also previously portrayed Clark Kent's kryptonian mother, Lara, in the television show Smallville.