Chris Hardwick

Glowface (voice)

Jansen Panettiere

Truman X (voice)

Patrick Warburton

Mr. X (voice)

Wendie Malick

Mrs. X (voice)

Lynsey Bartilson

Tuesday X (voice)

Tom Kane

Randy Poffo

Stephen Root

Tom Kenny

Dee Bradley Baker

Laura Marano

Scout Y (voice)

Lindsay Sloane

Jason Schwartzman

Ashley Johnson

Soleil Moon Frye

Carlos Ramos