Chloë Grace Moretz
Nimona (voice)

Riz Ahmed
Ballister Boldheart (voice)

Eugene Lee Yang
Ambrosius Goldenloin (voice)

Frances Conroy
The Director (voice)

Lorraine Toussaint
Queen Valerin (voice)

Beck Bennett
Sir Thoddeus Sureblade (voice)

RuPaul
Nate Knight (voice)

Indya Moore
Alamzapam Davis (voice)

Julio Torres
Diego the Squire (voice)

Sarah Sherman
Coriander Cadaverish (voice)

Mia Collins
Demon Baby (voice)

Zayaan Kunwar
Young Ballister (voice)

Charlotte Aldrich
Young Gloreth / Additional Voices (voice)

Cindy Slattery
Syntheya - Voice of the Kingdom / Additional Voices (voice)

Sommersill Tarabek
Institute Analyst / Additional Voices (voice)

Sebastian Trager
Danks Kid (voice)

Sadie Trager
Concerned Citizen #1 (voice)

Taryn Bruno
Concerned Citizen #2 (voice)

Lincoln Davis
Goldenloin Fan #1 (voice)

Lylianna Eugene
Patience / Additional Voices (voice)