Dagmara Dominczyk

Zelma (voice)

Michele Pawk

Biology (voice)

Matthew Modine

Bo (voice)

Cameron Monaghan

Sergei (voice)

Stephen Lang

Jonas (voice)

Erica D. Schroeder

Elita (voice)

Emma Kenney

Sarma (voice)

Anna O'Donoghue

Teacher #1 (voice)

Tanya Franks

Teacher #2 (voice)

Clyde Baldo

Eduards (voice)

Najla Said

New Girl (voice)

Keith Randolph Smith

Man on Train (voice)

Dan Domingues

Lauris (voice)

Florencia Lozano

Zelma's Mother (voice)

Ruby Modine

Nina (voice)

Carolyn Baeumler

Darya (voice)

Christina Pumariega

Darya's Mother (voice)

Tracy Thorne

Master of Ceremonies #1 (voice)

Laila Robins

Master of Ceremonies #2 (voice)

Cindy Cheung

Velta (voice)

Dale Soules

Official (voice)

Jennifer Dorr White

Pastor (voice)

Brian Dykstra

Estonian #1 (voice)

Andrew Garman

Estonian #2 (voice)

Michael Laurence

Big Man (voice)

Sturgis Warner

Big Man's Friend (voice)

Ieva Katkovska

Mythology Siren #2 (voice)

Kristine Pastare

Mythology Siren #3 (voice)

Iluta Alsberga

Mythology Siren #1 (voice)

Madara Botmane-Vāgentroca

(voice)

Zane Daudziņa

(voice)

Dainis Grūbe

(voice)

Juris Kalniņš

(voice)

Ģirts Ķesteris

(voice)

Storm Large

(voice)

Katrīne Pasternaka

(voice)

Regīna Razuma

(voice)

Edgars Samītis

(voice)

Guna Zariņa

(voice)

Kaspars Znotiņš

(voice)