Suggestions by @boombox

Wellesley Wild

as Showrunner in Henry the Boy

Peter Browngardt

as Director in Henry the Boy

Steven Bernstein and Julie Bernstein

as Composer in Henry the Boy

Tara Strong

as Cassie in Henry the Boy

Erica Lindbeck

as Cassie in Henry the Boy

Tony Jay

as Bruce in Henry the Boy

Catherine Taber

as Mom of Henry in Henry the Boy

Nicolas Cantu

as Jazz in Henry the Boy

Melissa Altro

as Jazz in Henry the Boy

Jim Cummings

as Dad of Henry in Henry the Boy

Bryn McAuley

as Sister of Henry in Henry the Boy

Iain Armitage

as Gregory in Henry the Boy

Grey DeLisle

as Alice the Robot in Henry the Boy

Cory Doran

as Henry the Boy in Henry the Boy