Blockbuster (Justice League Unlimited)

Mark Desmond developed a serum to make himself stronger, but although it accomplished this, it left him almost mindless. His criminal brother, Roland, manipulated him into committing a series of robberies, and taught him to hate and destroy Batman. Blockbuster is also an ex-Member of Luthor/Grodd's Legion of Doom,and was killed by Killer Frost.

History
Blockbuster was first seen in the Justice League Unlimited episode "Kid's Stuff" voiced by Dee Bradley Baker. He, Cheetah, Copperhead, and KGBeast were robbing a gold vault. While KGBeast chased after Batman,Superman entered the vault to find Blockbuster already inside. Yelling to his partners in crime to pound the Justice League's heads,Blockbuster rushed at Superman and punched him. Superman responded hurling Blockbuster into a wall. Superman then dragged Blockbuster's limp form over to where KGBeast and Cheetah lay in the middle of the hallway,having been deafeated by Batman and Wonder Woman,who roped the villains up with her Lasso of Truth,only to be transported to another dimension with the other adults. Blockbuster found himself next to KGBeast,but unlike the latter,who showed barely any reaction to the change in surroundings,Blockbuster cowered behind a rock. Later, Blockbuster was shown to also be a member of the Legion of Doom in the series. Blockbuster was also present during the attack on Gorilla City with The Puzzler, but he was easily defeated by Superman once again. During the two-part series finale, Lex Luthor tried to resurrect Brainiac by ordering the Legion to transform the base into a spaceship, so that they could travel to the site of Brainiac's ruined asteroid base. With Tala's help, Grodd attempted a coup to retake control of the Secret Society, leading to a battle between members loyal to either Grodd or Luthor. The Secret Society members loyal to Luthor were: Atomic Skull, Bizarro, Cheetah, Doctor Destiny, Evil Star, Giganta, Heat Wave, Lady Lunar, Sinestro, Star Sapphire, Toyman and Volcana.

The group loyal to Grodd included: Angle Man, Blockbuster, Bloodsport, Copperhead, Crowbar, Doctor Cyber, Electrocutioner, Fastball, Goldface, Hellgrammite, Key, KGBeast, Killer Frost, Major Disaster, Merlyn, Monocle, Nuetron, Parasite, Rampage, Shade, Silver Banshee, Tala, and the Weather Wizard. Blockbuster tried to punch Luthor, but was thwarted by a blast from Sinestro's power ring. Heatwave then eventually tried to burn Blockbuster with his gun, only to be temporarily stopped by Silver Banshee's scream. After the pitched battle, Luthor defeated Grodd and the surviving portion of Grodd's forces:Blockbuster, Copperhead, Fastball, Goldface, Hellgrammite, Key, Parasite, Rampage, Shade, and Weather Wizard,who were frozen solid by a turncoat Killer Frost to spare herself from any retribution from Luthor. (KGBeast being the only surviver,as he had switched sides during the battle). Blockbuster was destroyed when Darksied blew apart the Legion of Doom's headquarters,which included the mass of ice that contained the frozen Blockbuster.