Suggestions by @markclaunch

Jack Black

as Theo in Once... The Book of Merlin

Score: +1

Sean Gunn

as Bose in Once... The Book of Merlin

Score: +1

Chris Hemsworth

as King Arthur in Once... The Second Book of Arthur

Score: +1

Bradley Cooper

as Ty in Once... The Book of Merlin

Score: +1

Jason Momoa

as JonJoy in Once... The Book of Merlin

Score: +1

Kevin Grevioux

as Kaliden - The Dragon in Once... The Book of Merlin

Score: +1

Elliot Page

as Pix in Once... The Book of Merlin

Score: +1

Emma Stone

as Gemma in Once... The Book of Merlin

Score: +1

Alexandra Daddario

as Vinnic in Once... The Book of Merlin

Score: +1

Chrissy Teigen

as Twi in Once... The Book of Merlin

Score: +1

Jacqueline Fernandez

as Treek in Once... The Book of Merlin

Score: +1

Meghan, Duchess of Sussex

as Yolie in Once... The Book of Merlin

Score: +1

Amanda Seyfried

as Elaine Pelles (Grail Maiden) in Once... The Second Book of Arthur

Score: +1

Dove Cameron

as Candleen in Once... The Book of Merlin

Score: +1

Gal Gadot

as Pita in Once... The Book of Merlin

Score: +1

Olivia Wilde

as Edle in Once... The Book of Merlin

Score: +1

Angelina Jolie

as Vivian in Once... The Second Book of Arthur

Score: +1

Stephen Lang

as King Lot in Once... The Book of Merlin

Score: +1

Doug Jones

as The Devil in Once... The Book of Merlin

Score: +1

Katherine McNamara

as Jeev in Once... The Book of Merlin

Score: +1