Doctor Who. Or is that Dr. Who.

• He is sometimes a She.
• He is an alien of the race Time Lord. Except when he’s half-human.
• The most recent run was Season 2. Or Season 15. Or Series 41.
• The Doctor has reincarnated 15 times. Or 17. Or 18. Or 19. Or 20. Or 28.
• Continuity is just what the writer of the current episode remembers / is convenient.
• The only rule is: There is no such thing as canon.