Alex Russo played by Selena Gomez

The Ninth Doctor played by Christopher Eccleston

Rose Tyler played by Billie Piper

Justin Russo played by David Henrie

Max Russo played by Jake T. Austin

Harper Finkle played by Jennifer Stone

Jackie Tyler played by Camille Coduri

Mickey Smith played by Noel Clarke

Mason Greyback played by Gregg Sulkin

Captain Jack Harkness played by John Barrowman