Cool Party

Phillip Van Dyke

Arnold (voice)

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Olivia Hack

Rhonda Wellington Lloyd (voice)

Justin Shenkarow

Harold Berman (voice)

Dan Castellaneta

Grandpa Phil (voice)

Christopher Walberg

Stinky Peterson (voice)

Ben Diskin

Eugene Horowitz (voice)

Sam Gifaldi

Sid (voice)

Lauren Robinson

Nadine (voice)

Marcus Toji

Park (voice)

Craig Bartlett

Brainy (voice; uncredited)

Adam Wylie

Curly Gammelthorpe (voice)

Lane Toran

Wolfgang (voice)

Tim Wiley

Edmund (voice)

Anndi McAfee

Phoebe Heyerdahl / Girl (voice)