Eve Teschmacher

"She cries more than Halle Berry at award shows."

- Cat Grant about Eve Teschmacher.

Eve Teschmacher is the research assistant of Lena Luthor and the former personal assistant of James Olsen and Cat Grant at CatCo Worldwide Media, until she began to work with Lena on her experiments. It is later revealed that she has been secretly working for Lex Luthor, and betrays Lena after giving him a cure for his disease.

Early life
Eve was born on the East Coast and is implied to have had a strained relationship with her family, except for her older cousin. During her high school years, she spent a summer working at a children's theme park, playing a bunny. During this job, Eve became familiar with how the park's theatrical machines operated.

Later, she attended Yale University and graduated at the top of her class. During her time there, she studied nuclear physics with Jen Steinmetz-O'Grady.

Working for CatCo
After Kara Danvers was promoted, she recommended Eve to be her replacement as Cat's assistant. Cat found her inadequate, particularly compared to Kara, and often screamed at her. She was apparently reduced to tears on more than one occasion because of this. At one point, Eve forgot Cat's coffee, and as a punishment, Cat made her call the dean of Yale and admonish him for having given her a diploma. Eve became James Olsen's assistant after Cat decided to take a leave of absence from CatCo. She was instantly infatuated with "Mike Matthews" (the fake identity of Mon-El) on his first day at work, and willingly helped him with his files. She and Mon-El are later caught having sexual relations in a copy room by Kara. Later on, she let Mon-El use her credit card to buy a suit to wear to go to Lena Luthor's charity event.

Some days later, while working one night, she witnessed Vibe and Gypsy duel, questioning to herself in the background why National City was getting "weirder" every day, as the two jumped into another universe.

After Kara rejected Mon-El, he decided to move on and went on a date with Eve, but it went badly for her as he could only talk about Kara the whole time. Eve told him that he had to get over his ex if he ever wanted to date anyone else, to which he quickly responded that he and Kara hadn't dated. A few days later, When Kara bumped into Eve, she asked how things were going with "Mike" as she thought they were dating and Eve told her the truth of what happened. Kara told Eve that she and "Mike" hadn't dated, and Eve slyly replied that this was what he had said, too.

When James chose to take a little Phorian named Marcus under his care, bringing him to his office, Eve cheerfully greeted the child, bringing him and James some snacks from Noonan's. Later, she was caught in the powerful telekinetic destruction that Marcus caused in the building due to his powers' involuntary reaction with the energy released from Rhea's Transmatter portal.

During the Daxamite invasion, Eve was among the CatCo employees who managed to escape when the building was attacked by the Daxamite army, thus saving herself. After CatCo reopened the activity following the invasion, Eve accompanied Professor Ben Lockwood to a meeting with James. The man tried to convince the media conglomerate's CEO that the invasion had deprived many people of their work and possessions and to also tell their story to the public. However, Eve interrupted their speech to inform James that CatCo's new owner, Lena Luthor, wanted him on the phone, prompting Lockwood to storm off.

Getting along with the new boss
During Lena Luthor's first day as the owner of CatCo, Eve was thrilled to meet her up-close and warmly greeted her. As she went to get Lena some coffee, Lena suggested that Eve use the private elevator as it would be faster to traverse up and down the establishment that way. Eve initially shied away from the suggestion as that particular elevator was reserved only for those at the top of CatCo’s hierarchy. However, Lena stated that starting from that day on, anyone could use the elevator at their discretion, much to Eve's delight. Later that night, Eve was seen leaving the office with Lena.

Some weeks later, Morgan Edge accused Lena of being responsible for many children in the city suffering from lead poisoning due to the lead bomb she to counter the Daxamite invasion. When Lena returned to CatCo, she requested Eve bring her then CDC's reports on the lead poisoning, the victims' medical reports, and the statistics Edge was using. Eve agreed, also expressing her sympathies for the situation. Shortly after, the father of a boy who lay comatose at Luthor Family Children Hospital due to lead poisoning stormed into CatCo, demanding to see Lena. Eve tried to calm him down, but Lena agreed to see him. The man accused Lena of carelessly putting his son and many other children at risk, vowing she would pay as security escorted him out.

Eve was at a staff meeting in CatCo when Morgan Edge, having survived an assassination attempt, stormed into the room blaming Lena of having tried to kill him. Afterwards, Eve brought Lena a coffee, which ended up poisoning the latter. As Kara took care of Lena, James asked Eve where she got the coffee, to which Eve indicated the cart in front of the building, right at the moment where Morgan's assassin was fleeing the scene.

When the Cult of Yuda Kal attacked CatCo to capture Tanya, Eve screamed in terror as Olivia pulled a gun on James, kneeling and covering her head. James briefly checked on Eve after the group left.

Becoming Lena's assistant
After Lena brought James an overabundance of pizzas, he told Eve they would need her stomach for at least two of them. Eve smiled joyfully and the asked them if they'll need something else, to which Lena asked a cup of coffee due to reading a "seriously dry" article. Eve promptly asked if it was the one written by Forrester from Scientific Universe Journal and recommended that Lena read Jen Steinmetz-O'Grady's work, whom she studied with at Yale. After Eve left, Lena was surprised that Eve had studied nuclear physics, to which James answered that nothing of Eve could surprise him anymore. Later, Lena offered Eve the position of her research assistant as the former was studying the Harun-El. While working in Lena's lab, an overjoyed Eve thanked her boss for bringing her on, showing enthusiasm at the prospect of working on a project for Supergirl. Lena then explained to her what the Harun-El is and what could be her potential.

After the Kryptonian witches known as the Children of Juru attacked the D.E.O., Lena received a phone call from Alex Danvers and informed Eve of what happened and that Sam wasn't getting better, to wich Eve responded that she hadn't good news either as she worked on the Harun-El to healing cells in Sam's blood but, instead of responding, they're getting weaker. Those world get Lena an illumination, making her understand how to use the rock to split Sam from Reign. After Reign and the Children of Juru were finally defeated, Lena, having secretly synthesized a portion of the Harun-El for secret experiments, called Eve to inform her that the second phase of their trials were ready to began.

When Mercy Graves broke into L-Corp building in order to destroy for good the image inducer used by National City's aliens to pass as humans, Eve entered alarmed into Lena's office to inform her that the building was lock down. She received some special earplugs to resist the super-sonic sound waves Mercy was using to incapacitate everyone in the structure, including the security team. Realizing the woman's intention, Kara, Lena and Eve decided to stand against her and reach the server's room in order to prevent her from the only way to shut down the image inducer: a manual override. The three managed to evade Mercy's men and got into one of the elevators, though the woman spoke and mock them all the time through various monitors. While on the east wing, third floor, corridor B, Mercy tried to block them activating remotely the watertight bulkheads but Kara (secretly using her Kryptonian's powers) stopped them. Then, before Mercy's man reach them, Eve was able to shut the bulkheads close by activating them manually. Later she was sent by Lena to the control room in order to take back the building's security system from Mercy, a task that Eve managed to accomplish.

Further experiments with the Harun-El
After arriving late at work because of the depliants spread on her car by the Children of Liberty, Eve apologized to Lena, who told her not to worry and that she hoped James would denounce the group's actions on Sean Chiu's TV show "The Counterpoint Daily" wich Eve claimed to love. Then one of the tumorous hearts under glass on which they were testing the healing capabilities of the Harun-El started to collapse despite the attempts to get him beat again with electric shocks. After finding that the tumors were still growing at the time of collapse, Lena ordered Eve to perform a biopsy and then destroy the sample; Eve tried to cheer up her boss by stating that they got still two protocols left, and that she was trying to cure cancer, so time would have definitely be needed. Later that day, after more hearts "died", Eve and Lena noticed that instead of shrink the tumors keep getting bigger, so Eve suggested to spend the night test the protocol again but Lena told to come back home to her family. Despite her assistant's protests Lena insisted to take a break from the work until the following day and ordered her to incinerete the heart but, as she tried to do what requested, Eve discovered that the heart had become fireproof, shocking both women. Realizing the Harun-El can potentially gave humans superpowers, and that the world is on the verge of a civil war between humans and aliens, Lena told Eve that the people they love would have need their protection an that she had decided to move forward with the "Protocol Harun-El", asking Eve to find a human subject.

The following morning Eve entered Lena's office informing that their first human subject has arrived early; she started to describe him as a "really nice guy" with bright green eyes like Lena's, but the latter cut her speech stating that making experiments on human is extremely serious and she won't make it less difficult if she made her empathize with the subject. Eve sincerely apologize to Lena and told her of how mutch she ammired her for all the good her experiment would bring to the Country and the whole Planet. Lena then asked Eve to gave her the subject's folder, stating that they would refer to him only as "Subject 0331".

Working with the D.E.O.
After Lena accepted Colonel Lauren Haley's offer to share with the government her research over the possibility to give superpowers to humans, she and Eve moved into the D.E.O. headquarter's laboratory in order to continue their experiments with the organization's resources for a couple of weeks. The move upset a lot Eve, who was very buisy trying to find the gel electrophoresis apparatus when Director Alex Danvers came to visit her and Lena to ask if they needed something. Alex told Eve where she used to keep hers when that was her laboratory before watching Lena's research deducing what she was doing and prompting the woman to ask her not to divulgate the procedure with the government, since she had only agreed on giving them the finished product. Few days later, while Eve was reading the results of some new tests, she stumbled upon Alex, who entered the lab, deactivated the cameras and telling both her and Lena that there was something wrong with the government and that she wanted to help their research.

Some days later, James called Eve to his office, telling her that one of his reporter had found a lead regarding a black budget used by L-Corp, knowing James and Lena had recently broke-up and supposing hat they were still in a "rough patch", Eve spoke kindly telling him that she needed to ask Lena before to comment anything regarding it, but assured him that it wuold probably be because of some kind of measure to prevent industrial espionage, and that they're on the part of the "good guys". Then, Eve leave, promising to ask Lena and clear the situation as soon as she can, but right after she enter the lab and tried to talk with her, Lena quickly told her it was not the right moment as she wanted to concentrate only on the project due to the pressures she received from Colonel Haley. After the aliens' peaceful protest on National City, Colonel Haley told Lena that there could still be hope for the Country and granted her a free day telling that, for now, time was on their side. Eve cheerfully commented that "tomorrow is another day" but Lena pointed out that it could still be too late.

Personality
Eve was initially shown to be kind, caring, selfless, intelligent, and had a sense of justice, honor and good morals, considering the anti-aliens movements as "creeps" and being praised by Kara herself for her sweetness and smartness. However, she was also very sensitive and prone to crying to the point to being described as a weeper by Cat Grant. Nevertheless, Eve is an extremely hard-working woman extremely dedicated to her job. She also has the habit to apologizing even when it's not necessary,  and it's extremely rare to see her mad at someone or something.

Despite appearing as an airhead and a klutz, Eve is actually quite smart, intuitive and seemingl empathic, always proving to be supporting and full of attentions for her firends and co-workers, as demostrated when she realizes of Kara and Mon-El's feelings for one another before themselves, when she tried to comfort Lena Luthor over the time needed for their experiments and their importance for the World, or when talking with James Olsen about his break-up with Lena.

Although usually pretty mild and kind of cowardly, Eve proved to be very brave if necessary, facing with absolutely no qualm the seige of L-Corp at the hands of Mercy Graves and her terroristic group.

It also seem that Eve has developed some sort of fear for Cat Grant.

In O Brother, Where Art Thou?, it's later revealed that her kind and timid persona was all a complex facade, and that she's really a ruthless, homicidal, cold-blooded sociopath who's been working as Lex's loyal double-agent for years.

Abilities

 * Genius-level intellect/Expert physicist: Despite her scatterbrained demeanor, Eve is is an extremely intelligent and savvy woman, to the point that Kara Danvers praised her intellect to Cat Grant. Eve graduated at the top of her class from Yale University, where she extensively studied nuclear physics. Eve proved to be a valuable asset to Lena Luthor, helping the latter with her experiments on the Harun-El.
 * Expert biologist: Eve is very proficient in the field of genetics and bioengineering, as she was able to help Lena study a cure to Samantha Arias' condition as well as to help with the Harun-El experiments on human empowering.
 * Computer specialist: Eve is a skilled computer specialist; she was able to monitor the security system of the L-Corp building from a laptop and later taking control of it from its own designer, Mercy Graves; she was also able to realize how to activate manually the building's watertight bulkheads just by looking at them.
 * Skilled engineer: Eve has displayed familiarity with many different forms of technology. For example, she used a bobby pin to trigger a hidden quick-release in the circuitry of an L-Corp door in order to close it.
 * Expert Markswoman: Eve is an expert in using firearms as she effortlessly killed a federal agent when she revealed she was working alongside Lex Luthor all along.

Supergirl
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Season 4
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Trivia

 * Eve is the second Supergirl character to be in another show in the Arrowverse, following Kara Danvers herself.
 * Eve is the only Supergirl character that appeared in an episode (​​​​​​) without Kara.
 * She hates salmon.

Behind the scenes

 * Eve Teschmacher first appeared in the 1978 film Superman as the assistant of Lex Luthor, famously portrayed by actress Valerie Perrine.
 * Eve becoming Lena's assistant and helping her with her experiments, as well as the reveletion that she worked alongside Lex all along, are nods to it.
 * In Eve's first appearance on the show, the way Cat Grant screams "Ms. Teschmacher!!!" is identical to the way Gene Hackman's Lex Luthor screams it throughout Superman.
 * Interestingly enough, the episode "​​​​​, wich marked Eve's return on the show's fourth season after five episode of absence, was aired on Andrea Brooks's 30th birthday.
 * The cast calling name for her was Janice.