Suggestions by @veroctrl

Will Poulter

as Marcus Flint in Trios era

Patricia Allison

as Lee Jordan in Trios era

Asa Butterfield

as Oliver Wood in Trios era

Hoyeon

as Cho Chang in Trios era

Nicholas Hoult

as Fred / George Weasley in Trios era

Alexandra Shipp

as Susan Bones in Trios era

Gemma Chan

as Daphne Greengrass in Trios era

Florence Pugh

as Lavender Brown in Trios era

Iman Vellani

as Parvati Patil in Trios era

Ritu Arya

as Parvati Patil in Trios era

Devon Murray

as Seamus Finnigan in Trios era

Alfred Enoch

as Dean Thomas in Trios era

Aiden Gallagher

as Theo Nott in Trios era

Pedro Pascal

as Victor Krum in Trios era

Karl Urban

as Victor Krum in Trios era

Brendan Fraser

as Victor Krum in Trios era

Avan Jogiar

as Harry Potter in Trios era

Sophie Okonedo

as Hannah Abbot in Trios era

Zawe Ashton

as Hannah Abbot in Trios era

Jessica Henwick

as Astoria Greengrass (Malfoy) in Trios era