- as Roberta 'Bobbie' W. Draper
- as James Holden
- as Alex Kamal
- as Sadavir Errinwright
- as Naomi Nagata
- as Praxideke Meng
- as Amos Burton
- as Camina Drummer
- as Jules-Pierre Mao
- as Dr. Strickland
- as Katoa
- as Namono 'Nono' Volovodov
- as Martian / Sinopoli
- as Reverend Doctor Anna Volovodov
- as Ranhofer
- as Sec-Gen Gillis
- as Loftis
- as Medical Tech
- as Chrisjen Avasarala
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