A, B, C, D, E

Alex Kingston as River Song/Melody Pond III
Anneke Wells as Polly Wright
Anthony Ainley as The Master ??
Arthur Darvill as Rory Williams
Billie Piper as Rose Tyler

Bonnie Langford as Mel Bush
Bryce Dallas Howard as Claire Knight
Carole Ann Ford as Susan Foreman
Caroline John as Liz Shaw
Catherine Tate as Donna Noble
Christopher Eccleston as The Ninth Doctor
Colin Baker as The Sixth Doctor
Daphne Ashbrook as Grace Holloway
David Tennant as The Tenth Doctor
David Tennant as The Metacrisis Doctor
Deborah Watling as Victoria Waterfield
Elisabeth Sladen as Sarah Jane Smith
Eric Roberts as The Master

F, G, H, I J, K

Frazier Hines Hamish Wilson as Jamie McCrimmon
Freema Agyeman as Martha Jones
Geoffrey Beavers as The Master ??
Georgia Moffat as Jenny Smith
Ian Marter as Harry Sullivan
Janet Fielding as Tegan Jovanka
Jaqueline Hill as Barbra Wright
Jenna-Louise Coleman as Clara Oswald
John Barrowman as Captain Jack Harkness
John Hurt as The War Doctor
John Simm as The Master ??
Jon Pertwee as The Third Doctor
Karen Gillian as Amy Pond
Kate O'Mara as The Rani
Katy Manning as Jo Grant

L, M, N, O, P

Lalla Ward as Romana II
Louise Jameson as Leela
Mark Strickson as Vislor Turlough
Mary Tamm as Romanna I
Matt Smith as The Eleventh Doctor
Matthew Waterhouse as Adric
Nicola Bryant as Peri Brown
Nicholas Courtney as Brigadier Lethbridge Stewart
Nina Toussaint-White as Melody Pond/River Song II
Noel Clarke as Mickey Smith
Patrick Troughton as The Second Doctor
Paul McGhann as The Eighth Doctor
Peter Davidson as The Fifth Doctor
Peter Pratt as The Master ??

Q, R, S, T, U

Roger Delgado as The Master I
Sarah Sutton as Nyssa
Sophie Aldred as Ace McShane
Sylvester McCoy as The Seventh Doctor
Tom Baker as The Fourth Doctor

V, W, X, Y, Z

Wendy Padbury as Zoe Heriot
Willian Hartnell as The First Doctor
Willian Russell as Ian Chesterton