Suggestions by @christopherrowe

Stanley Tucci

as Charles Xavier in MCU X-MEN

Simon Pegg

as Beast in XMEN UCM

Rami Malek

as Nightcrawler in MCU Xmen

Kate McKinnon

as Mystique in MCU Xmen

Elizabeth Banks

as Mystique in MCU Xmen

Alexandra Daddario

as Kitty Pryde in MCU Xmen

Millie Bobby Brown

as Rogue in MCU Xmen

Zac Efron

as Angel in MCU Xmen

Janelle Monáe

as Storm in MCU Xmen

Bryce Dallas Howard

as Jean Grey in MCU Xmen

Jensen Ackles

as Cyclops in MCU Xmen

Armie Hammer

as Cyclops in MCU Xmen

Margot Robbie

as Dazzler in MCU Xmen

Simon Pegg

as Beast in MCU Xmen

Taron Egerton

as Wolverine in MCU Xmen

Chris O'Dowd

as Gordon Edgley in Skulduggery Pleasant

Mark Strong

as Mr. Bliss in Skulduggery Pleasant

Robert Downey Jr.

as Billy-Ray Sanguine in Skulduggery Pleasant

Tom Hiddleston

as Nefarian Serpine in Skulduggery Pleasant

Sadie Sink

as Melancholia St Clair in Skulduggery Pleasant