 Yonas KibreabElio / Other Elio (voice) | Elio / Other Elio (voice) |
 Remy EdgerlyGlordon (voice) | Glordon (voice) |
 Zoe SaldañaOlga Solís (voice) | Olga Solís (voice) |
 Brad GarrettLord Grigon (voice) | Lord Grigon (voice) |
 Brandon MoonAmbassador Helix (voice) | Ambassador Helix (voice) |
 Jameela JamilAmbassador Questa (voice) | Ambassador Questa (voice) |
 Young DylanBryce (voice) | Bryce (voice) |
 Jake T. GetmanCaleb (voice) | Caleb (voice) |
 Matthias SchweighöferAmbassador Tegmen (voice) | Ambassador Tegmen (voice) |
 Ana de la RegueraAmbassador Turais (voice) | Ambassador Turais (voice) |
 Atsuko OkatsukaAmbassador Naos (voice) | Ambassador Naos (voice) |
 Shirley HendersonOoooo (voice) | Ooooo (voice) |
 Naomi WatanabeAmbassador Auva (voice) | Ambassador Auva (voice) |
 Brendan HuntGunther Melmac (voice) | Gunther Melmac (voice) |
 Anissa BorregoAmbassador Mira (voice) | Ambassador Mira (voice) |
 Shelby YoungDiplo Ship (voice) | Diplo Ship (voice) |
 Bob PetersonUniversal Users Manual (voice) | Universal Users Manual (voice) |
 Kate MulgrewMuseum Exhibit Narrator (voice) | Museum Exhibit Narrator (voice) |
 Tamara TunieColonel Markwell (voice) | Colonel Markwell (voice) |
 Trinity Jo-Li BlissAdditional Voices (voice) | Additional Voices (voice) |
| KKendra FountainAdditional Voice (voice) | Additional Voice (voice) |
 Kellen GoffAdditional Voices (voice) | Additional Voices (voice) |
 Leah Mei GoldAdditional Voice (voice) | Additional Voice (voice) |
| KKrysta GonzalesAdditional Voices (voice) | Additional Voices (voice) |
