original_query: Who are the main characters in the "30 Minutes After Noon" episode of Thunderbirds?
query: Who are the main characters in the "30 Minutes After Noon" episode of Thunderbirds?
answer: The main characters include  Jeff Tracy, his five sons (who pilot the Thunderbird machines), Thomas Prescott, British Secret Service agent Southern, Dempsey, Kenyon, and the Erdman Gang leader.