The New 52 in the context of "Barbara Gordon"

Simon Baz, one of the characters known as Green Lantern, is a superhero appearing in American comic books published by DC Comics, created by writer Geoff Johns and artist Doug Mahnke. Baz is an officer of the Green Lantern Corps, an extraterrestrial police force. The character made his debut in 2012 following The New 52 relaunch as part of its Green Lantern story arc "Rise of the Third Army", in which he replaces Silver Age hero Hal Jordan as the Green Lantern of Earth's sector.

Prior to his debut, the character made an unnamed cameo in The New 52 Free Comic Book Day Special Edition #1. DC later added Baz to its flagship team-up title Justice League of America in 2013.

Justice League International (JLI) is a DC Comics superhero team that succeeded the original Justice League from the late 1980s to the early 2000s. The team enjoyed several comic books runs, the first being written by Keith Giffen and J. M. DeMatteis, with art by Kevin Maguire, created in 1987. Due to editorial conflicts, the team's new makeup was based largely on newer characters, such as Booster Gold, and recent acquisitions from other comic book companies, such as Blue Beetle.

In 2010 and 2011, the team experienced a resurgence as part of the Blackest Night and New 52 comic runs.

In most of the DC Comics media, the Multiverse is a "cosmic construct" that is composed of the many universes the stories of DC media take place in. The worlds within the multiverse share a space and fate in common, and its structure has changed several times in the history of DC Comics.

"Flashpoint" is a 2011 comic book crossover story arc published by DC Comics. Consisting of an eponymous core limited series and a number of tie-in titles, the storyline premiered in May 2011. The core miniseries was written by Geoff Johns and pencilled by Andy Kubert. The series radically changes the status quo for the DC Universe, leading into the publisher's 2011 relaunch, The New 52.

Flashpoint details an altered DC Universe in which only Barry Allen seems to be aware of significant differences between the regular timeline and the altered one, including Cyborg's place as the world's quintessential hero, much like Superman is in the main timeline, with Superman himself being held captive as a lab-rat by the United States government within an underground facility in Metropolis. In addition, Thomas Wayne is Batman, and a war between Wonder Woman and Aquaman has decimated western Europe.

DC Rebirth is a 2016 relaunch by the American comic book publisher DC Comics of its entire line of ongoing monthly superhero comic book titles. Using the end of The New 52 (2011–2016) initiative in May 2016 as its launching point, DC Rebirth restored the DC Universe to a form much like that prior to the 2011 "Flashpoint" storyline while still incorporating numerous elements of The New 52, including its continuity. It also saw many of its titles move to a twice-monthly release schedule, along with being released at US$2.99.

DC Comics ended the Rebirth branding in December 2017, opting to include everything under a larger "DC Universe" banner and naming. The continuity and repercussions established by Rebirth continues into the New Justice (2018–2021), Infinite Frontier (2021–2023), Dawn of DC (2023–2024), and DC All In (2024–present) eras.

Poison Ivy is a character appearing in American comic books published by DC Comics. Created by writer Robert Kanigher, Sheldon Moldoff and artist Carmine Infantino, she debuted in Batman #181 (June 1966) and has become one of the superhero Batman's most enduring enemies belonging to the collective of adversaries that make up his rogues gallery.

In her comic book appearances, Poison Ivy is depicted as a doctor of botany-turned-misanthropic ecoterrorist in Gotham City named Pamela Lillian Isley, PhD (/ˈaɪzli/ EYEZ-lee) with the ability to control all plant life. Empowered by an elemental force known as the "Green", Ivy attempts to protect the sanctity and supremacy of nature at all costs by lashing out against humanity, which brings her into conflict with Batman. While usually portrayed as a supervillain, Ivy has also been an antiheroine at times as well as the primary love interest of Harley Quinn as of The New 52 and DC Rebirth relaunches. A one-piece costume adorned with leaves and vines serves as Poison Ivy's visual motif.

Doctor Sivana is the name of two fictional, related characters appearing in American comic books published by DC Comics. The original Doctor Sivana's alter-ego is Thaddeus Bodog Sivana, a recurring enemy of the superhero Captain Marvel created by Bill Parker and C. C. Beck and first appeared in Whiz Comics #2 (cover-dated February 1940) by Fawcett Comics. A mad scientist and inventor bent on world domination, the character was established as Captain Marvel's main archenemy during the Golden Age, appearing in over half of the Fawcett Captain Marvel stories published between 1939 and 1953. Thaddeus has kept his role as one of the key archenemies of Captain Marvel (now Shazam) throughout the character's appearances in DC Comics, which eventually acquired the rights to Fawcett's superhero characters. In 2009, Doctor Sivana was ranked as IGN's 82nd-greatest comic book villain of all time.

The second character known as Doctor Sivana is Georgia Sivana, P.h.D, the daughter of Thaddeus who first appeared in Mary Marvel #1, created by Otto Binder. Georgia was originally portrayed as an underling of her father who takes after her father in appearance and skills, both possessing keen scientific minds although the character is instead an arch-nemesis for Mary Marvel. Years following "The New 52" reboot and during the "Infinite Frontier" initiative, Georgia's character is revamped into an older professor, archaeologist, and estranged daughter of Thaddeus whose reputation is tarnished due to her father's obsession with magic in the scientific community and seeks to improve it at any cost.

Mary Marvel, also known as Lady Shazam and Shazam, is a superheroine originally published by Fawcett Comics and now owned by DC Comics. Created by Otto Binder and Marc Swayze, she first appeared in Captain Marvel Adventures #18 (cover-dated Dec. 1942). The character is depicted as a female counterpart of Shazam, being among the earliest of female counterparts of male superheroes, while often empowered by different set of patrons.

While the character's alter-ego is Mary Bromfield, her background and histories have varied over time; older stories have commonly depicted her as the twin sister of Billy Batson (birth name Mary Batson) separated at a young age following their parents' demise, ending up adopted by the Bromfield family. When reunited with her brother, she discovers powers similar to his and becomes a hero and protector of Fawcett City. At one point in time, the character also developed into a more antagonistic role as Black Mary. Following the New 52 reboot, she is instead cast as a victim of abusive parents who ran away from her family and is adopted by the Vazquez family. She later becomes the foster sister of Billy Batson, Freedy Freeman, and others wherein all become empowered and are part of the superhero family, the Shazam Family.