Suggestions by @theaudience

Stephen Campbell Moore

as The Twelfth Doctor in Doctor Who Steven Moffat Era (Alternative)

Adrian Rawlins

as War Doctor in Doctor Who Steven Moffat Era (Alternative)

Sophie Okonedo

as Madame Vastra in Doctor Who Steven Moffat Era (Alternative)

Anton Lesser

as Dr. Simeon/Great Intellegence in Doctor Who Steven Moffat Era (Alternative)

Hannah Murray

as Oswin/Clara Oswald in Doctor Who Steven Moffat Era (Alternative)

Tom Hughes

as Rory Williams in Doctor Who Steven Moffat Era (Alternative)

Jodie Comer

as Amy Pond in Doctor Who Steven Moffat Era (Alternative)

Daniel Rigby

as The Doctor/Eleventh Doctor in Doctor Who Steven Moffat Era (Alternative)

Paul Cornell

as Producer in Doctor Who Davis Era (Alternative)

Robert Pattinson

as The Tenth Doctor in Doctor Who Davis Era (Alternative)

Stephen Fry

as The Editor in Doctor Who Davis Era (Alternative)

David Morrissey

as Henry van Statten in Doctor Who Davis Era (Alternative)

Thomas Sangster

as The Empty Child in Doctor Who Davis Era (Alternative)

Imelda Staunton

as Harriet Jones in Doctor Who Davis Era (Alternative)

Tamzin Outhwaite

as Jackie Tyler in Doctor Who Davis Era (Alternative)

Ashley Walters

as Mickey Smith in Doctor Who Davis Era (Alternative)

James Marsters

as Captain Jack Harkness in Doctor Who Davis Era (Alternative)

Michelle Ryan

as Rose Tyler in Doctor Who Davis Era (Alternative)

Chiwetel Ejiofor

as The Doctor/The Ninth Doctor in Doctor Who Davis Era (Alternative)

Tom Burke

as Loki in Alternate MCU