Suggestions by @untrustworthy

Nathalie Emmanuel

as Mystique in Uncanny X-Men

Kiawentiio

as Mirage in Uncanny X-Men

Jack Gleeson

as Toad in Uncanny X-Men

Lucas Hedges

as Beast in Uncanny X-Men

Reid Scott

as Mister Sinister in Uncanny X-Men

Yura Borisov

as Omega Red in Uncanny X-Men

Taron Egerton

as Wolverine in Uncanny X-Men

Cailee Fleming

as Shadowcat in Uncanny X-Men

Tobias Menzies

as Professor X in Uncanny X-Men

Max Burkholder

as Iceman in Uncanny X-Men

Emilia Jones

as Rogue in Uncanny X-Men

Ben Barnes

as Magneto in Uncanny X-Men

Chloe East

as Magik in Uncanny X-Men

Miyako

as Jubilee in Uncanny X-Men

Ellie Bamber

as Jean Grey in Uncanny X-Men

Logan Lerman

as Cyclops in Uncanny X-Men

Alexandra Daddario

as White Queen in Uncanny X-Men

KJ Apa

as Gambit in Uncanny X-Men

Alexandra Daddario

as Emma Frost in X-Men MCU

Timothy Olyphant

as Sebastian Shaw in X-Men MCU