The Gryffindors
Past
Aaron Taylor-Johnson as James Potter
Ben Barnes as Sirius Black
Andrew Garfield as Remus Lupin
Karen Gillian as Lily Evans
Dane DeHaan as Peter Pettigrew
Alicia Vikander as Marlene McKinnon
Carey Mulligan as Alice Fortescue
Jim Sturgess as Frank Longbottom
Elizabeth Olsen as Molly Weasley nee Prewett
Stefano Masciolini as Arthur Weasley
Future
Daniel Radcliffe as Harry Potter
Rupert Grint as Ronald Weasley
Emma Watson as Hermione Granger
Bonnie Wright as Ginny Weasley
Matthew Lewis as Neville Longbottom
The Ravenclaws
Past
Kat Graham as Dorcas Meadows
Jamie Campbell Bower as Xenophilius Lovegood
Future
Evanna Lynch as Luna Lovegood
The Slytherins
Past
Odeya Rush as Regulus Black
Elle Fanning as Pandora Lestrange
Benjamin Wandsworth as Evan Rosier
Maxence Danet-Fauvel as Barty Crouch Jr
Janet Montgomery as Bellatrix Lestrange nee Black
Natalie Dormer as Narcissa Malfoy nee Black Keira Knightley as Andromeda Tonks nee Black
Harry Lloyd as Lucius Malfoy
Paul Wesley as Rabastan Lestrange
Ian Somerhalder as Rudolphus Lestrange
Future
Tom Felton as Draco Malfoy
Louis Cordice as Blaise Zabini
Dove Cameron Daphne Greengrass
Phoebe Tonkinas Astoria Greengrass