Suggestions by @nathanialprice

Ellie Bamber

as Narcissa Black in The Marauder's Era

Georgie Henley

as Molly Weasley in The First Wizarding War

Rupert Grint

as Arthur Weasley in The First Wizarding War

Olivia Colman

as Enid Pettigrew in The First Wizarding War

Emily Mortimer

as Hope Lupin in The First Wizarding War

Liam Cunningham

as Lyall Lupin in The First Wizarding War

Naomi Watts

as Euphemia Potter in The First Wizarding War

Irrfan Khan

as Fleamont Potter in The First Wizarding War

Finn Cole

as Rabastan Lestrange in The First Wizarding War

Joe Cole

as Rodolphus Lestrange in The First Wizarding War

Judi Dench

as Cassiopeia Black in The First Wizarding War

Kate Winslet

as Druella Black in The First Wizarding War

Christian Bale

as Cygnus Black in The First Wizarding War

Damian Lewis

as Ignatius Prewett in The First Wizarding War

Carice van Houten

as Lucretia Prewett in The First Wizarding War

Jeremy Irons

as Arcturus Black in The First Wizarding War

Colin Firth

as Orion Black in The First Wizarding War

Eva Green

as Walburga Black in The First Wizarding War

Dean-Charles Chapman

as Peter Pettigrew in The First Wizarding War

Sophie Skelton

as Lily Potter in The First Wizarding War