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| Mark Desmond | |
| Aliases: | Blockbuster |
| Continuity: | DC Universe |
| Notability: | Antagonist |
| Type: | Supervillain |
| Occupation: | Scientist |
| Gender: | Male |
| Race: | Altered human |
| Location: | Gotham City |
| Associations: | Secret Society of Super-Villains Suicide Squad |
| Relatives: | Roland Desmond |
| Status: | Deceased |
| First: | Detective Comics 345 |
| Final: | Legends 3 |