Dee Bradley Baker
Louie (voice)

Jason Alexander
Father (voice)

Mary Steenburgen
Mother (voice)

Reese Witherspoon
Serena (voice)

Kath Soucie
Serena (cygnet) / Paramedic / Newscaster (voice)

Carol Burnett
Mrs. Hammerbotham (voice)

Seth Green
Boyd (voice)

Joe Mantegna
Monty (voice)

Sam Gifaldi
Sam the Beaver (voice)

Melissa Disney
Billie (voice)

Elizabeth Daily
Ella (voice)

Pamela Adlon
A.G. Skinner (voice)

Steve Vinovich
Maurice / Roger (voice)

Gary Anthony Williams
Sweets (voice)

Corey Burton
Senator (voice)

Michael Winslow
Chief (voice)

David Jeremiah
Squirrel / Hawk (voice)

Julie Nathanson
Felicity (voice)

Jack Angel
Justice of the Geese (voice)