Adelaide Kane as Guinevere Ambrosius / Gwen Ravensong

Charlie Hunnam as Arthur Pendragon

Colin Morgan as Geralt Ambrosius / George Ravensong

Michael Fassbender as Young! Merlin Ambrosius

A Young Asa Butterfield as Young! Geralt Ambrosius

Lilly Aspell as Young! Guinevere Ambrosius

Gal Gadot as Young!Seraphina Ambrosius

The Cast of King Arthur and the Legend of the Sword as Their Respective Characters