Factions and characters from the TV adaptation of The Expanse.
- The Rocinante — Ship of the main characters.
- The Belt — Belters in general, the hardscrabble colonists of the asteroid belt and moons of the outer gas giants.
- The Outer Planets Alliance — The Belter independence movement, made of several different loosely aligned factions, all with the goal of establishing a sovereign Belter nation.
- The Free Navy — The renegade splinter faction of the OPA that rises to prominence starting in Season 4.
- Earth — Earth & Luna, governed by the United Nations.
- Mao-Kwikowski Mercantile & Protogen Corporation — Earth's Renegade Splinter Faction, a conspiracy between the Protogen mega-corporation (led by Jules-Pierre Mao) and elements of the UN government and military (led by UN Undersecretary Errinwright and Admiral Nguyen).
- Mars — The Martian Congressional Republic.
- Laconia — Aka "the rogue Mars splinter faction" that eventually settled on Laconia.
- Ilus/New Terra — One of the first interstellar colonies settled by humans after the formation of the Ring gate at the end of Season 3.
- Extrasolar — The enigmatic Precursor aliens who built the Ring network, and the even more mysterious extra-dimensional aliens who destroyed them millions of years ago.
