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1. The Unintentional Adventures of the Cat Companion by DestRoja

   Fandoms: Doctor Who (2005), Harry Potter - J. K. Rowling, Doctor Who  

   • Not Rated
   • Graphic Depictions Of Violence
   • No category
   • Work in Progress

   01 Aug 2026

   Tags

   • Graphic Depictions Of Violence
   • The Doctor (Doctor Who) & Harry Potter
   • Harry Potter
   • Tenth Doctor (Doctor Who)
   • Donna Noble

   Summary

   When Harry escapes the graveyard and witnesses Voldemort come back, he no longer thinks it is safe to stay in Hogwarts. He manages to find himself as the companion of The Doctor and Donna, the only problem? he is stuck in his Animagus form and the two time travelers have no idea he is not actually an animal, and is in fact human.

   Language:

   English

   Words:

   3,365

   Chapters:

   2/?

   Comments:

   30

   Kudos:

   80

   Bookmarks:

   21

   Hits:

   800