| First regular appearance: The War Machines
Final regular appearance: The Faceless Ones
Ben joined the Doctor with Polly and left with Polly, the two were nearly inseparable. Polly met Ben at a night club where Able Seaman Ben Jackson was moping over his drink. Polly was finally able to cheer him up, and they set out on their adventure with The War Machines. He also witnessed William Hartnell's regeneration to Patrick Troughton.
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