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|Affiliations|| U.S. Government|
|Voice Actor||Richard McGonagle|
General Groff is a general of the US Army.
In Paradox, Groff is seen as the military supervisor for Professor Paradox's time travel experiment in the 1950s. He witnessed the accident that turned Hugo into the 1950s Monster and sent the Professor into the wormhole.
Ben 10: Alien Force
- Paradox (first appearance)