Mark Desmond was the raging beast known as Blockbuster.
Biography[]
Undergoing tests to make him smarter, Mark Desmond was exposed to strange chemical compounds which transformed him into the raging beast known as Blockbuster. This brought him into conflict with Hawkman and Batman. On one known occassion, Batman and Robin teamed up with Hawk and Dove to take down Blockbuster when the Necromancer was mind controlling him.
Blockbuster later joined the Secret Society, helping Signalman capture Catwoman.