Indigo AKA Brainiac 8 was introduced by Judd Winick and Alé Garza in Titans/Young Justice: Graduation Day #1 (July 2003). She was a member of the Outsiders, but when she recovered her memories as Brainiac 8 she became the villain she was before. She is from a future after the 31st Century. The Brainiacs are from Colu, a distant planet. Some are organic like Brainiac 5; others are robots or cybernetic beings. This one was a female artificial intelligence. Brainiac’s history is long and convoluted. The only thing that all of the versions agree upon is that the original was extraterrestrial.
The Fortress of Solitude as we know it first appeared in Action Comics #241 (June 1958). It includes many artifacts from Krypton. One artifact that appeared in the episode is the Legion of Super-Heroes Flight Ring. The Legion is a super team from the 30th or 31st Century. Both Superboy (Kal El) and Supergirl (Kara Zor El) have been members during its history. Fort Pemberton might be named after Sylvester Pemberton AKA the Star Spangled Kid, from the Golden Age of Comics.
Siobhan Smythe in the comics is Silver Banshee. She was created by John Byrne in Action Comics #595 (December, 1987). She was given the magical powers of sonic screams, by the forces of the netherworld. Originally her name was Siobhan McDougal. She was a super-villainess and foe of Superman. She became Siobhan Smythe in the New 52. In the New 52, she is an Irish girl who befriended Supergirl. Her dead father, the Black Banshee attacks her, this results in her transformation into Silver Banshee. It is not clear if this version will be good or bad.
Hugo Strange was created by Bill Finger and Bob Kane in Detective Comics #36 (February 1940). Originally, Hugo Strange was another mad scientist villain. In the 1970’s, he returned experimenting on various people turning them into monsters at a private hospital he was operating. Bruce Wayne ended up a patient there; this led to Hugo Strange learning Batman’s identity. He apparently dies before selling that information. He was revealed to still be alive in 1983, and attempted to usurp Bruce Wayne’s place as Batman. Post-Crisis, Hugo Strange was a psychiatrist who was obsessed with Batman. He was up to his old tricks with human experiments and replacing Batman. Gotham’s version seems to be made of the same stuff.
DC’s Legends of Tomorrow Season 1 Episode 7: Marooned
Jon Valor in the comics is the Black Pirate, who was created by Sheldon Moldoff in Action Comics # 23 (April 1940). He was a DC Comics premier pirate character. He fought in the 16th Century. He was a privateer, who used the masked Black Pirate identity to protect his loved ones. He fought for King, country, and justice. This is very different from the show’s time pirate.
Professor Stein’s idol, Rick Starr, Space Ranger was a science fiction character from DC Comics in the 1950’s. He was created by Edmond Hamilton, Gardner Fox, and Bob Brown in Showcase #15 (July 1958). This character hid his identity with the alter ego of Space Ranger. This was an interesting amalgamation of Science Fiction and Superhero concepts. He fought space pirates, alien invaders, evil scientists and other futuristic threats in the 22nd Century.
Rip’s commands Kanjar Ro and Imperiex Onslaught are reference to comic book characters and crossovers. Kanjar Ro was introduced by Gardner Fox and Mike Sekowsky in Justice League of America Vol. 1 #3, (February 1961). He was a dictator from another planet. He became an intergalactic space criminal. Imperiex debuted in Superman (vol. 2) #153 (February 2000) and was created by Jeph Loeb and Ian Churchill. He was the embodiment of entropy. He fought all of the Earth based heroes in the Our World at War crossover. He was defeated when he understood that the anomaly he was trying to eliminate was himself. Onslaught being included is interesting. It usually refers to a character from Marvel Comics, who is the amalgam of Professor X and Magneto. Onslaught led to the Heroes Reborn ear in Marvel. In DC Comics, Onslaught was a team of super powered terrorists who were sponsored by the fictional Middle Eastern nation, Qurac. Eve Baxter may be a nod to Rip Hunter’s 1960’s comic book girlfriend Bonnie Baxter.