Dirk Armstrong is a former member of the board of directors at CatCo Worldwide Media.
Dirk Armstrong tried to use Cat Grant's hacked emails to ruin her reputation. After a board meeting, Armstrong admitted to having set Cat up. At his office, he later sees James at his desk, saying he'll support him if Cat leaves, though this was a front so that James could plant a bug on his computer. Dirk was later confronted by Cat in her office with the evidence. Dirk admitted to the hacking, but initially threatened to fight. However, since Dirk used the company's computers to hack Cat's e-mails, he was told by Cat that he didn't have a leg to stand on. He was then fired and arrested.
- Dirk Armstrong first appeared in Superman: Man of Steel #61 (October, 1996) and was created by Louise Simonson and Jon Bogdanove. He was a conservative reporter at the Daily Planet, who repeatedly found himself at odds with the highly liberal Perry White and Clark Kent.