Cosmic Boy # 1 1986 VF/NM

Cosmic Boy # 1, released on October 9, 1986 (with a December 1986 cover date), is the first of a four-issue limited series published as a tie-in to the Legends crossover event. Written by Paul Levitz with art by Keith Giffen and Ernie Colón, the series explores the impact of Crisis on Infinite Earths on the Legion of Super-Heroes' history. 

"Those Who Will Not Learn the Lessons of History" 

The story follows Cosmic Boy (Rokk Krinn) and his girlfriend Night Girl (Lydda Jath) as they travel from the 30th Century to the 20th Century for a vacation. 

• Hostile Arrival: They arrive in an era fueled by anti-superhero sentiment caused by the villain G. Gordon Godfrey. After being wounded in a fight with the monster Brimstone, Cosmic Boy is attacked by an angry mob and rescued by Night Girl.
• A Shattered History: A student of history, Cosmic Boy is horrified to discover that the 20th Century is not as he remembered. He learns of catastrophic events like Hiroshima, Chernobyl, and the Challenger explosion, which were not part of his historical records.
• The Superman Paradox: Most shockingly, he encounters Superman, who does not recognize him. In his original timeline, Superman was Superboy and a core member of the Legion. Cosmic Boy realizes that time itself has been rewritten.
• A New Mission: Fearing that these changes will prevent the future colonization of space and the birth of the Legion, Cosmic Boy decides he must intervene to ensure humanity stays on its proper path.
• Failed Heroics: He attempts to save a NASA rocket launch from exploding. While he successfully contains the nuclear fallout, the local authorities view his actions as hostile and attempt to arrest him, forcing him to flee while injured. 
• Cosmic Boy: Founding member of the Legion with magnetic powers.
• Night Girl: His partner, who possesses super-strength that only functions in the dark or absence of sunlight.
• Superman: Appears in a flashback where he fails to recognize his old friend.
• Creative Team: Written by Paul Levitz, with breakdowns by Keith Giffen and finished art by Ernie Colón.