The Key was originally sent by Grodd to help Lex Luthor escape from prison and bring him to the Legion's headquarters. His next mission was to accompany Luthor and Dr. Polaris to Blackhawk Island to steal the Spear of Longinus for Grodd. The Justice League intervened and Key was knocked out by the Flash, but they escaped when Luthor threatened to kill Chuck Sirianni. They returned to the Hall of Doom and Luthor learned that Grodd only wanted the Spear to hang it at his office.
- The original concept for The Key was that he would have been a Brainiac construct, allowing him to monitor the actions of the Legion of Doom and eventually re-merge with Luthor. This accounts for his prominence in "I Am Legion" and his voice by Corey Burton.
- I Am Legion
- To Another Shore (Cameo)
- Dead Reckoning (Cameo)
- The Great Brain Robbery (Cameo)
- Alive! (Cameo)
|Members of the Secret Society|
|Grodd • Lex Luthor|
|Clayface • Giganta • Killer Frost • Parasite • Sinestro • Shade|
|Angle Man • Atomic Skull • Bizarro • Black Mass • Blockbuster • Bloodsport • Cheetah • Copperhead • Crowbar • Devil Ray • Doctor Cyber • Doctor Destiny • Doctor Polaris • Doctor Spectro • Dummy • Electrocutioner • Evil Star • Fastball • Giganta • Gentleman Ghost • Goldface • Heatwave • Hellgrammite • Javelin • The Key • KGBeast • Killer Frost • Lady Lunar • Livewire • Major Disaster • Merlyn • Metallo • Mirror Master • Monocle • Neutron • Nightfall •Psycho-Pirate • Puppeteer • Puzzler • Queen Bee • Rampage • Shade • Shark • Silver Banshee • Sinestro • Sonar • Sportsmaster • Star Sapphire • Tala • Tattooed Man • Thinker • Top • Toyman • Tsukuri • Volcana • Weather Wizard|