Dr. Arthur Light was a minor but persistent foe of a number of heroes. He first fought the Justice League and, when he failed to defeat that group, he fought their sidekicks and former sidekicks, the Teen Titans. He then founded the Fearsome Five, but they were later defeated by the Titans. Light was violently expelled from the Five by his teammates. Each criminal caper led to Light's defeat, often humiliating him in the process.