Ruby Gillman, Teenage Kraken

Lana Condor
Ruby Gillman (voice)

Toni Collette
Agatha Gillman (voice)

Annie Murphy
Chelsea Van Der Zee (voice)

Sam Richardson
Uncle Brill (voice)

Liza Koshy
Margo (voice)

Will Forte
Gordon Lighthouse (voice)

Colman Domingo
Arthur Gillman (voice)

Jaboukie Young-White
Connor (voice)

Blue Chapman
Sam Gillman (voice)

Ramona Young
Bliss (voice)

Eduardo Franco
Trevin (voice)

Jane Fonda
Grandmamah (voice)

Nicole Byer
Janice (voice)

Echo Kellum
Doug (voice)

Brianna Arsement
Home Buyer (voice)

Juju Green
Gym Teacher / Coach (voice)

Preston Arsement
Tourist (voice)

Jordan Matter
School Principal (voice)

Ricardo Hurtado
Student #1 / Student #10 (voice)

Merk Nguyen
Student #6 / Student #9 (voice)