The Expanse Guest cast, played by Brian George Episode 1x01: Dulcinea (Dec 14, 2015) Episode 1x03: Remember the Cant (Dec 22, 2015) Episode 1x04: CQB (Dec 29, 2015) Episode 1x10: Leviathan Wakes (Feb 2, 2016) Episode 2x05: Home (Feb 22, 2017) Guest cast, played by Michael Benyaer Episode 4x02: Jetsam (Dec 13, 2019) Episode 4x03: Subduction (Dec 13, 2019) Episode 4x05: Oppressor (Dec 13, 2019) Episode 4x07: A Shot in the Dark (Dec 13, 2019) Episode 4x08: The One-Eyed Man (Dec 13, 2019) Episode 4x10: Cibola Burn (Dec 13, 2019)