(Matt the Pony’s former companions….well some of them…and Oswin even though she was never really a companion of his…

Namely I drew basically every new Who-companion who has been in more than one adventure with the Doctor. So none of the single-episode-companions. Sarah Jane and K9 got a guest pass for being classic Who companions and Oswin is just there because she’s a companion in canon… even if Matt the pony never got to that part. )