In later seasons, Chloe discovers she herself has the metahuman power of empathic healing, though she apparently loses it after an encounter with the alien supervillain Brainiac.

In the show's final two seasons, Chloe finds love with Oliver Queen, otherwise known as the costumed vigilante-archer Green Arrow, whom she eventually marries and has a son with.

The latter two characteristics often cause Chloe to get into trouble with both her friends and with billionaire industrialists Lionel Luthor and his son Lex, two of the show's primary antagonists.

Introduced in the series pilot, Chloe spends much of her time helping her best friend Clark Kent (Tom Welling) investigating random mutant citizens of Smallville.

Her journalistic curiosity—always wanting to "expose falsehoods" and "know the truth"—causes tension with her friends, especially when she is digging into Clark's past in the season two episode "Lineage".

[9] In season four's "Gone", Clark and Lois team-up and discover that Lex's security team had found the explosives in the safehouse and absconded Chloe and her father to safety before the bomb detonated, and that he has been hiding her ever since.

[13] In the season six episode "Justice", Chloe begins assisting Green Arrow (Justin Hartley) and his team of superheroes under the codename "Watchtower".

[16] In the season finale, Chloe learns that her special power lets her heal any wound and even reverse death, when it activates to save Lois.

While subjected to their tests, Chloe discovers that her altercation with Brainiac has apparently caused to her to lose her meteor-related powers, but instilled two new abilities: vast super intelligence and technopathy.

[22] After Chloe marries Jimmy in "Bride", she is kidnapped by Doomsday, a genetically engineered killing machine bent on destroying Earth and becomes Brainiac's vessel once again.

Chloe vows to keep the Watchtower Jimmy gave her as a wedding gift open, in the hope that all lost heroes—namely Oliver and his team—will find their way home.

[29] In this capacity, she acquires a rival in Tess's computer expert Stuart Campbell (Ryan McDonell);[30] her status as superhero information broker also makes her a target for Checkmate bosses Amanda Waller (Pam Grier) and Maxwell Lord (Gil Bellows).

[32] In the season ten première, when Oliver is kidnapped by Suicide Squad leader Rick Flag (Ted Whittall), Chloe risks her own sanity by putting on the helmet of Doctor Fate to learn his location.

With the information acquired from Fate's helmet, she organizes a switch for Oliver; in Flag's captivity, Chloe fakes suicide and goes off-the-grid.

[38] She is the original creation of Al Gough and Miles Miller, having not been produced first in the DC Comics Universe, unlike the other main characters Clark Kent, Lana Lang, Lex Luthor and Pete Ross.

[2] Gough and Millar felt she had a "rare ability to deliver large chunks of expositionary [sic] dialogue conversationally", and decided to cast her against their initial intention to give the character an ethnic origin.

Writer Holly Harold believes that, in addition to being infected by the meteor rocks, bringing Lois into the journalistic field also provides Chloe with a lot of ammunition for growth and development.

Lois's presence at the Daily Planet allows Chloe the chance to reflect upon herself, and discover what things are most important to her – her career or her family and friends.

[2] The creative team removed the notion that Chloe was going to turn into Clark's future wife when they introduced Lois Lane in season four.

Warshaw also communicated regularly with Gough and Millar so that he could find more unique ways to expand Smallville stories over to Chloe's Chronicles.

In the first volume, picking up some time after the events of season one's "Jitters", Chloe begins checking into the rumors of the "Level 3" facility at the Smallville LuthorCorp plant.

[57] In volume two, Chloe is contacted by an ex-Navy SEAL, Bix, and former member of LuthorCorp's "Deletion Group" who has information regarding Dr. Walsh's disappearance.

She quickly realizes, after attending one of Jacobi's shows, that he is nothing more than a con artist, which causes her to devote her time to proving that so no one will fall victim to his schemes.

[60] In Smallville: Dragon, Chloe attempts to solve the murder of one of her teachers, Mr. Tait, which she and Clark believe to be the work of recently released convict Ray Dansk.

While attending a party put on by Lex, Chloe is injured during an attack on the crowd by Dansk, who has turned into a reptilian creature thanks to exposure to the meteor rocks.

Written by Bryan Q. Miller, who also wrote for the television series, the first issue reveals that Chloe and Oliver Queen are living in Star City.

Inside what is left of her counterpart's mind, Chloe finds a universe coming to an end, caused by an attack led by a powerful gargantuan being; she also witnesses Lois Queen's death.

[72][73] According to writer Kurt Busiek, the problem of bringing Chloe into the mainstream comic book universe, and keeping her television background, was that she would have filled two roles: "the Girl from Back Home and the Reporter".

Those roles were already filled by the adult comic book versions of Lana Lang and Lois Lane, so the plan was to give the character a new background.

[76] Chloe Sullivan is mentioned during a flashback in a season three episode of Supergirl, titled "Midvale", where she helps a teenage Alex and Kara Danvers in solving a murder mystery of a classmate through email correspondence.