Alexandra Danvers (Earth-Prime)

Dr. Alexandra "Alex" Danvers is the former director of the DEO and the adoptive sister of Kara Zor-El, better known as Supergirl. Danvers is also the daughter of Jeremiah and Eliza Danvers, the wife of Kelly Olsen and the adoptive mother of Esme.

After the Crisis, Danvers' Pre-Crisis memories were restored and she was aware of Lex Luthor's hidden agendas with the DEO. She soon quit her position as director and became a vigilante, with J'onn J'onzz giving her the mantle Sentinel, after his former colleague N'orr Cott.

Early Life
Alexandra Danvers was born to Jeremiah and Eliza Danvers. In her teenage years, the family adopted Kara Zor-El after her crash on Earth. Danvers and Kara then developed a strong bond and had a close relationship.

At some point prior to 2009, Danvers attended Stanford College and occasionally returned to Midvale to ensure Kara's safety.

2009
On May 25, 2009, Danvers, Kara and Kenny Li had a conversation in a diner and were interrupted by a crashing spacecraft. They then investigated the crash site, only to find two aliens dressed in formal outfits, not knowing they are their future teammates. The trio then assisted the aliens to hide their spacecraft and let them sleep with them until they can return to their "home".

Life in the DEO
In 2015, Danvers was onboard Flight 237 on the way to Geneva. However, the aircraft malfunctioned and the plane crashed midair above National City. Kara then revealed herself to the public and rescued the plane, landing it on the harbor with no casualties.

Later, Danvers was promoted by J'onn J'onzz as director. Some time during her time as agent, she was immersed in a sealed tank with water and was able to escape afterwards.

In 2017, during Barry Allen and Iris West's wedding, Danvers had a "fling" with Sara Lance.

In 2019, Danvers met Kelly Olsen and began a relationship with her.

Crisis on Infinite Earths
In January 2020, Danvers arrived at Kara's loft and was attacked by her heat vision. Kara then woke up from her sleep and apologized to Danvers as she was still confused over the events during the Crisis. Danvers then returned to the DEO headquarters, later informing Kara about a Metahuman attack at the shore. J'onn J'onzz then restore Danvers' Pre-Crisis counterpart's memories, allowing her to understand that the owner of the DEO, Lex Luthor, in in fact a villain.

Later, Danvers fought against countless Shadow Demons alongside other heroes. She then returned to Kara's loft and attended a moment of silence for Oliver Queen.

Brainiac 5s of the Multiverse
Weeks after the Crisis, Brainy returned to work with another version of himself. As Danvers attempted to ask them which of the two is the Brainiac 5 she knows, another Brainiac 5 entered and informed the agents that she is the director of the DEO. Danvers then told her that she is the director while more versions reveals themselves, with one of them dying in front of them, telling them to prevent "him" from opening the Bottle.

Danvers then examined the body of the eyepatched Brainiac 5 along other Brainiac 5s, later discovering the cause of death is the Anti-Life Equation.

Toyman Fiasco
When Winn Schott returned from the future to protect his legacy, Danvers was present during the fight against Toyman. Danvers was also able to see an ally of Toyman and tasked Brainy to identify the person. However, due to Brainy working with Lex Luthor in order to defeat Leviathan, he was "unable" to and Danvers continued the fight alongside the team. Danvers and the team later celebrated at karaoke after defeating Toyman for the first time.

When the DEO found out that Toyman was able to escape death into digital codes, Danvers attempted to use DEO technology in order to find him. Knowing Luthor is able to watch from the system, Danvers planted spyware on her tablet (later removed by Brainy) and continued the investigation. After the battle, Danvers realized that she can no longer work under Luthor's orders and quits the DEO

While talking to her sister about their past, Kara was approached by Mxyzptlk in order to make amends for his previous visit. As Kara agrees, Danvers and J'onzz were sent to a paintball game in order for private time.

Obsidian Platinum
After quitting the DEO, Danvers and J'onzz worked together to find the person responsible for the attack on Andrea Rojas. The two was then able to locate the person's lair and found out the attacker was the wife of an Obsidian Platinum addict who committed suicide, leading to her attacks. Danvers then received a Martian weapon from J'onn.

Days later, Danvers and J'onzz were sought help by Al Crane, whose brother has been missing for days. Danvers then entered the Obsidian Platinum platform through Kelly Olsen's assistance. In the platform, Danvers was able to find a castle where Crane is located. Danvers then entered, only to find out other people were also trapped. She then faced her fears and trauma to recue them, later entering a hallway where he was located. However, he was "programmed" to explode every few minutes, preventing Danvers from approaching him and recue him. Danvers then used the gun on her uniform created by the platform as a weapon and fought against the kidnapper, Richard Bates.

I Am Supergirl
"I don't need anyone to save me. Because I am Supergirl!"

- Danvers while in Obsidian Platinum

Upon receiving a phone call from her mother regarding the death of her father, Danvers went to Kara's to deliver the news. She then refused to attend the funeral and returned to her own apartment. later entering Obsidian Platinum through Kelly's lenses on the coffee table.

In the platform, Danvers became Supergirl and fought crimes. As a side effect of the realistic visuals, Danvers slowly adapts to the environment and was unable to leave. Olsen was then able to find Danvers' eyes turning red and tried the regular Obsidian North extraction procedures, with non of them working. Olsen then edited the source codes of the platform and forced Danvers to stop a crime robbery, later finding out it was a teenage version of herself. Despite the attempts, Danvers continued to reject the reality and was disbelieving what teenage Danvers says until she sees her father. She then fought against NPCs and successfully escape the platform.

Knowing she was trying to escape reality the whole time, Danvers accepted her father's death and attended the funeral in Midvale, forgiving his mistakes for not being a good father to her.

Vigilantism
Soon, Danvers began extensive training using the Hand of the Soldier. However, her missing her past as the director of DEO caused her to lose focus and was unable to activate the hand. Danvers then left the Tower, continuing her investigation on Leviathan. Kara and Danvers later approached Pete Andrews, who has information in the library. However, the two were shot at by assassins and Danvers returned home discouraged. Olsen later talked to her, telling her that is she wants to act like a superhero, she should dress like one.

When called to Kara's loft, Danvers showed her the new suit and how she is going to become a vigilante. Danvers then teamed up with "Supergirl" (disguised by Miss Martian) and fought several Leviathan members. The two then reunited with Kara at the Luthor Corp Headquarters and discussed their next move. The team split once more with Danvers, M'orzz, J'onzz and Nal fighting the elemental benders with Kara and Lena Luthor staying in Obsidian Platinum to convince those trapped to voluntarily log out of the platform. As the offense team gets overwhelmed by Leviathan, they disappeared thanks to Querl Dox.

Guilt
"I feel like I don't even deserve air."

- Danvers on being unable to save Kara

Powers

 * Hand of the Soldier Application: The Hand of the Soldier is a Martian weapon given to Danvers by J'onn J'onzz after she left the DEO. Like many Martian technology, the hand is able to materialize and assist Danvers in fights.
 * Materialization: The Hand of the Soldier is able to materialize all sorts of weapons according to its users' will. Danvers was given multiple training sessions by J'onzz to summon gadgets such as firearms, rocket launchers, medical equipment, and lassos proficiently.
 * Telekinesis: Since the hand is connected to weapons materialized from itself, Danvers is able to call back weapons that were knocked out of her hand and also create forcefields to protect herself.

Abilities

 * Peak of Human Physical Condition: Danvers was trained by the DEO and was in peak of human physical condition.
 * Hand-to-Hand Combat: Danvers was able to fight several skilled Leviathan members using hand-to-hand combats.
 * Marksmanship: Danvers was trained to use firearms in the DEO.
 * Leadership: As a former director of the DEO, Danvers is capable of leading large number of people at once.
 * Medical Knowledge: Danvers has a doctor degree in medicine and has an advanced medical knowledge of human as well s alien physiology.
 * Engineering: Danvers and J'onzz were tasked with creating the Anti-Magic Cuff, which required basic engineering skills.

Current Equipment

 * Hand of the Soldier: Danvers received this as a gift from J'onn, it is a Martian technology that can transform into any weapon according to her will.
 * Sentinel Suit: Danvers created a protective suit after Kelly Olsen told her that a mask is suitable for a vigilante.

Former Equipment

 * DEO Protective Suit: As the director of the DEO, Danvers wore a suit to protect herself when out on the field.
 * Supergirl Suit: In Obsidian Platinum, Danvers was Supergirl and later escaped with her suit deleted.
 * Guns: Danvers was issued a standard Beretta Px4 Storm Sub-Compact as an agent and later director of the DEO.

Trivia

 * Danvers drove a car licensed "10408K" in 2009.
 * Danvers and Kelly's favorite movie villain is Hans Gruber.