Kieran Culkin
Peter (voice) (4 eps)
Nikki Rapp
Alex (4 eps)
Horatio Sanz
Allistair,Knight #1, Gorgeous, Mud Dad (4 eps)
Peter Serafinowicz
Frederick, Announcer,Demonic Hare (4 eps)
Nonso Anozie
Demonic Hare, Gregor (4 eps)
Fred Armisen
Gavin, Brody (4 eps)
Julian Barratt
Harold the Guard, Ace (4 eps)
Jermaine Fowler
Demarcus (4 eps)
Ellie Kemper
Mudria (4 eps)
Ken Marino
Snake (4 eps)
Alfred Molina
Rupert, Neil (4 eps)
Jordi Mollà
King Diego Belafonte (4 eps)
Christopher Corey Smith
Knight #2 (4 eps)
Jon Daly
King Rufus (voice) (4 eps)
Wendi McLendon-Covey
Queen Eleanor (voice) (4 eps)
Jeremy Redleaf
Peter (voice) (4 eps)
Gillian Jacobs
Rosalind / Katherine (voice) (4 eps)