Graham O'Brien (The Daft Dimension)
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A version of Graham O'Brien existed in the Daft Dimension. He travelled with the Thirteenth Doctor, alongside Yasmin Khan and Ryan Sinclair.
Graham partook in a traditional Victorian, practically Medieval, Christmas dinner hosted by the Doctor. (COMIC: The Daft Dimension 533)
Some time later, he listened as the Doctor explained her life story in excruciating detail. (COMIC: The Daft Dimension 548)