Rogue, a new character in Doctor Who, shares similarities with the beloved Captain Jack and is set up to potentially recur in future episodes. Rogue, a time-traveling bounty hunter, has an unknown background that mirrors the Doctor's tragic past, setting him up as a potential major love interest. Rogue's sacrifice and mysterious disappearance hint at his potential return in future Doctor Who episodes, adding depth to the overall storyline.

Jonathan Groff's long-awaited appearance on Doctor Who introduced a new, mysterious character who could appear on a recurring basis. Every actor who has played the Doctor has met some people who would make good companions if the timing were different but who are unable to join the Doctor in their adventures for one reason or another. Rogue was one such character, as he spent most of the episode interacting with the Doctor one-on-one.

Groff's character had been rumored to be...