The following is an extensive list of characters that appear in the 1996 DC Comics Elseworlds story Kingdom Come.

Protagonists Norman McCay: An elderly pastor who serves as the narrator. After Wesley Dodds' death, Norman unwillingly inherits his late friend's precognitive powers and is charged by the Spectre with deciding who will bear the guilt of the coming apocalypse. He was modeled after Clark Ross, the father of Kingdom Come artist Alex Ross. Spectre: The Agent of God's Wrath takes Norman through the events of a possible future to determine who is responsible for an impending apocalyptic event, but his "faculties are not what they once were" and he needs a human perspective to properly judge events. Norman succeeded in convincing him to try to see these events through his guide's human perspective and the two become close friends afterwards.

Superman's Justice League Many of the members of the re-formed Justice League are either old characters in new forms or brand new adoptions of old names. Partial list: Superman: Leader of the League, the silver-templed Man of Steel is growing uneasy with the role of being a world leader during a time of extreme tension. His costume features a dark, muted steel blue shade, with a black belt and a black backdrop for the "S" chest shield—signs of mourning for both the tragic death of Lois Lane at the hands of the Joker and his own solemn stance on the superhuman crisis. Due to a lifetime of absorbing yellow solar radiation, he is more powerful than ever and has become resistant to kryptonite. Wonder Woman: Superman's lieutenant, she is slowly consumed by rage directed at the state of the world and her exile from Paradise Island. Her fellow Amazons have deemed her mission to bring peace to "man's world" a failure. At the conclusion, she starts a relationship with Superman, and her royal station as Princess is restored. Red Robin: Dick Grayson—the original Robin and Nightwing—reclaims his original mantle and replaces his former mentor on the Justice League. Though estranged from Bruce Wayne for most of the story, the two ultimately reconcile and restore their friendship at the end. Green Lantern: Alan Scott, the Golden Age Green Lantern, does not have a power ring, as he incorporated the lantern that fueled the ring into his armor and wields a longsword of light. His space station becomes the Justice League's new satellite headquarters. At the conclusion of the miniseries, he becomes a UN charter member under the nation of "New Oa". His space station's design is based on the cover artwork for the Electric Light Orchestra Album "Out of the Blue". Flash: He is referred to as "Wallace West" in the novelization; Mark Waid later confirmed this Flash to be Wally West in The Kingdom, despite wearing a variation of Jay Garrick's helmet. After becoming the embodiment of the Speed Force, the Flash is now faster than ever. His molecules have become unstable, and as a result, he is constantly in motion. This also allows him to see every plane of existence, including ethereal planes. When Superman goes into exile, the Flash remains active, using his lightning speed to constantly and restlessly patrol and protect Keystone City. He is saved from the Gulag bombing by Jade's shields. Hawkman: Now a literal 'hawk man', he has become a guardian of nature, though also referred to as an ecological terrorist. The story does not specify which version of Hawkman this is, apart from "combining the spirit of the old with the otherworldly flesh of the new", which suggests he is Carter Hall in the body of the post-Zero Hour Thanagarian "Hawkgod". He is killed in the nuclear blast. Power Woman: The former Power Girl (now physically enhanced to bodybuilder-like proportions) and the League's enforcer. Ray: Son of the first Ray, he is one of the survivors of the Gulag battle after being teleported out by Fate. The Ray is responsible for removing the radiation from Kansas twice, once after the Justice Battalion disaster and the second time after the Gulag bombing. Donna Troy: Seen wearing Amazon robes, the former Wonder Girl has replaced her sister/mentor Wonder Woman as Paradise Island's ambassador to the world. As an American-born orphan adopted by Queen Hippolyta, she is mortal, unlike her Amazon sisters, and has aged considerably compared to Diana. She still shows incredible Amazon super strength, speed, and flight. Her bracelets are engraved and removable, different to standard Amazon bracelets. In the novelization, she is killed in the nuclear blast. Red Arrow: The former Speedy and Arsenal is now following in the footsteps of his mentor, the Green Arrow. In the novelization, he is killed in the nuclear blast. Aquaman: Garth, the former Aqualad, inheritor of his mentor's mantle as Aquaman, wears a variation of his 'Aqualad' costume, but sporting long pants and thick beard. In the novelization, he is killed in the nuclear blast. Robotman: The former Cyborg, Victor Stone is fully composed of liquid metal. He is petrified by the nuclear blast. Atom Smasher: Godson to the original Atom, the name "Atom Smasher" was coined in Kingdom Come; during the time of the book's publishing he was still known as Nuklon. King Marvel: The adult, married Freddy Freeman and also father of the legitimate heir of the Power of Shazam, he and his family are left behind on the satellite headquarters before the Gulag battle as reservists. Freddy is visually based on Elvis Presley, who was a fan of Captain Marvel Jr. in real life.Dundy, Elaine (2004). Elvis and Gladys. University Press of Mississippi. p. 69-70 Lady Marvel: Mary Batson-Freeman, Freddie's wife, and mother of The Whiz. The Whiz: Freddie and Mary's teenage son, anointed as the legitimate heir of the Power of Shazam. He is named after Whiz Comics, the series in which Captain Marvel debuted. Aleea Strange: Adam Strange's daughter who has taken up her father's mantle, she is killed in the nuclear blast. Red Tornado: A heavily armed Mathilda Hunkel who is reservist member. Cyclone: A female Red Tornado with wind-powers, her identity as Maxine Hunkel is confirmed by Superman in Justice Society of America (vol. 3) #10. Tornado: Ulthoon, the original Tornado Champion, is an entity from the planet Rann who contributed to Red Tornado's creation. He is disintegrated during the nuclear attack. Human Bomb: An explosion-causing metahuman, the collected edition calls him "the same combustible hero of old", implying this is Roy Lincoln. Midnight: The ghost of Charles McNider, appearing in the form of a dense smoke cloud. Captain Comet: The mutant hero was chosen by Superman to be prison warden of the Gulag. He is killed in the prison riot when Von Bach snaps his spine. Hourman: The successor of the first Hourman, who does not possess his predecessor's time limit. Sandman: The former Sandy, the Golden Boy, Sanderson Hawkins has taken up the mantle of Sandman after Wesley Dodds, his mentor, died. The collection edition mentions that "the sands of time have stood still" for him, implying agelessness. Living Doll: The daughter of Doll Man and Doll Girl. Bulletman and Bulletgirl The successors of the original Golden Age duo. Golden Guardian: The second clone of Jim Harper who took up his predecessor's role, he is killed by the bomb blast. Starman / Thom Kallor: A member of the Legion of Super-Heroes from the 31st century who can manipulate gravity and density. He is temporarily transported to the Kingdom Come universe during a mission with the Legion. Brainiac's Daughter: Brainiac's offspring and the ancestor of Brainiac 5. The character is inspired by the XTC song of the same name, and is visually based on the pre-Crisis Supergirl. Mister Miracle: Scott Free is the designer and chief guard of the Gulag. Thanks to his foresight, he and his family survived the bombing through a Boom Tube portal. As Scott Free aged, he came to bear a strong resemblance to his biological father, Highfather. Big Barda: Scott Free's wife, Avia's mother, and guard at the Gulag. By the time she appeared in the novel, she had lost an eye. Avia Free: Daughter of Mister Miracle and Big Barda, she wears her mother's battle armor but sports her father's colors. She decides to follow her parents' ideals and join Superman's Justice League as a guard in the Gulag. Phoebus: The Earth's newest fire elemental after Firestorm, he joins the Justice League after briefly fighting against them, fights at the Gulag riot, and is killed in the nuclear blast. Nucloid: An elastic nuclear-powered hero whose circulatory system glows with a fluorescent "black light" effect through his costume. He joins the League in the wake of the Kansas disaster, but dies calcinated after the Gulag bombing. Power Man: The last of the once many Superman robots under a metahuman disguise. Atlas: Based on the character created by Jack Kirby, he is described as a "legendary demigod figure".

Batman's Silent Cavalry Bruce Wayne has formed a group of human and metahuman heroes, many of whom are second-generation, to combat the Justice League and the Mankind Liberation Front, playing on the generational differences among the heroes. Partial list: Batman: Since his identity was exposed, Batman no longer hides behind the carefree facade of Bruce Wayne; as a result, Wayne Manor was destroyed by Two-Face and Bane. His age and lifetime of injuries force him to wear an exoskeleton at all times. He wears an armored suit equipped with a xistera-style of his arsenal and a flight belt featuring da Vinci-inspired ornithopter wings with propulsion systems. The city's criminal underworld was simultaneously crushed when Genocide—a disciple of Magog—slaughtered its vile elements, including Batman's rogues gallery. By obliterating Arkham Asylum, Blackgate Penitentiary, and even the distant Belle Reve Penitentiary, Genocide aggressively breached federal jurisdiction to finish the purge. With its organized crime syndicates and supervillains eliminated, Gotham City has been transformed into a mechanized police state under Batman's absolute rule of fear. Tethered to the Batcave, automated Bat-Knights relentlessly patrol the streets to hunt down street criminals reminiscent of Joe Chill, the murderer of Bruce Wayne's parents. The Riddler and Catwoman, the only notable survivors of the underworld purge, later resurface as members of Lex Luthor's Mankind Liberation Front (MLF). His distrust of both Superman's League and Luthor's MLF leads him to form the Outsiders, feeling mankind should be able to make its own decisions and mistakes. Ted Kord: One of Batman's three lieutenants, now wearing a Blue Beetle armored battle suit powered by the mystical scarab that gave Dan Garret his powers. Oliver Queen: Batman's lieutenant, he has married his long-time love, Dinah Lance, and the two have a daughter. His appearance is similar to that in The Dark Knight Returns. Green Arrow persuades some of the young heroes willing to follow Superman to change their minds and support Batman's cause. He is killed in the nuclear blast as his skeleton can be seen directly to the left of Superman, cradling his wife's corpse. Dinah Queen: Batman's lieutenant, the former Black Canary now sports short gray hair, dresses herself in a practical, manly fashion, and wields a crossbow after adopting her husband's crime-fighting ways. She was among the fatalities in the Gulag battle after she was accidentally shot in the head by Trix. She dies in her husband's arms during the blast. Black Canary / Olivia Queen: Olivia Queen is daughter of Oliver and Dinah. Her appearance resembles that of her mother, except for headgear with a red vision-enhancer lens on her left eye, a wrist-mounted crossbow, and a thigh quiver.