The Expanse characters through Book 1
45 entries introduced through Book 1. Spoiler-free index: no later-book entries or plot summaries.
- Ade Tukunbo
- Alex Kamal
- Amos Burton
- Anderson Dawes
- Antony Dresden
- Asher Kamamatsu
- Cameron Paj
- Candace
- Captain Higgins
- Captain McBride
- Captain McDowell
- Captain Shaddid
- Captain Theresa Yao
- Chief Gunderson
- Corporal Travis
- Dimitri Havelock
- Diogo
- Enrique Dos Santos
- Frederick Lucius Johnson
- Gabby Smalls
- Gomez
- Gourab
- Hasini
- Hillman
- Inspector Sematimba
- James Holden
- Jiu Jitsu Instructor
- Joseph Miller
- Josephus Miller
- Juliette Mao
- Lieutenant Givens
- Lieutenant Lopez
- Marine Dookie
- Marine Mole
- Mateo Judd
- Mikey Ko
- Naomi Nagata
- Octavia Muss
- Rebecca Byers
- Roberta Draper
- Sa'id
- Sam
- Shed Garvey
- Wallace Fitz
- Warehouse Manager