The first Trigger Twins debuted in All-Star Western #58 (May 1951), and were created by Robert Kanigher and Carmine Infantino.
In Crisis on Infinite Earths, the Trigger Twins are revealed to originate from Earth-Two.
[6][7] In Infinite Crisis, the Trigger Twins join the Secret Society of Super Villains before being killed in battle.
[9] Alternate universe variants of the Trigger Twins from Earth-18 appear in The Multiversity Guidebook #1 as members of the Justice Riders.
[10] In the Arrowverse crossover "Elseworlds", John Deegan rewrites reality, turning Barry Allen and Oliver Queen into the Trigger Twins before they eventually defeat Deegan and restore reality.