Dempsey was a member of The Erdman Gang seen in 30 Minutes After Noon.
He was voiced by Peter Dyneley.
- This is one of the most often used Thunderbirds puppets, with more than its fair share of appearances. It also played:
As the Reactor Station Guard
- The appearances listed above are all from Season 1. A slightly remodeled version of the same puppet also appeared in several Season 2 episodes.
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