Kieran Culkin

as Peter (voice)

4 episodes

Nikki Rapp

as Alex

4 episodes

Horatio Sanz

as Allistair,Knight #1, Gorgeous, Mud Dad

4 episodes

Peter Serafinowicz

as Frederick, Announcer,Demonic Hare

4 episodes

Nonso Anozie

as Demonic Hare, Gregor

4 episodes

Fred Armisen

as Gavin, Brody

4 episodes

Julian Barratt

as Harold the Guard, Ace

4 episodes

Jermaine Fowler

as Demarcus

4 episodes

Ellie Kemper

as Mudria

4 episodes

Ken Marino

as Snake

4 episodes

Alfred Molina

as Rupert, Neil

4 episodes

Jordi Mollà

as King Diego Belafonte

4 episodes

Christopher Corey Smith

as Knight #2

4 episodes

Jon Daly

as King Rufus (voice)

4 episodes

Wendi McLendon-Covey

as Queen Eleanor (voice)

4 episodes