India Eisley as Emrys Le Fay-Black/Morgana Potter

Katie McGrath as Cassiopeia Le Fay-Black

Tom Hughes as Tom Marvolo Riddle

Tom Felton as Draco Malfoy

Daniel Radcliff as Harry Potter

Scarlett Byrne As Pansy Parkinson

Louis Cordice As Blaise Zabini

Lorenzo Zurzolo as Theodore Nott

Ashley Benson as Daphne Greengrass

Michelle Trachtenberg As Tracey Davis

Barbie Ferreira As Millicent Bulstrode

James and Oliver Phelps as Fred and George Weasley

Will Tudor As Sebastian Vincent Morgenstern

ALSO STARING:

Rupert Grint as Ron Weasley
Emma Watson as Hermione Granger
Aaron Taylor Johnson as James Potter
Sophie Skelton as Lily Potter née Evans
Ben Barnes as Sirius Black
Andrew Garfield as Remus Lupin
Richard Harris and Michael Gambon as Albus Dumbledore

The Rest of the Harry Potter cast as their respective characters.