Characters in the CW series The 100. Note that only spoilers from season 3 are hidden.
The main cast from Season 2. note From left to right: Finn Collins, Clarke Griffin, Bellamy Blake, Jasper Jordan, Octavia Blake, Raven Reyes, Lincoln, Monty Green, Abby Griffin, Thelonious Jaha, Marcus Kane. Not pictured: John Murphy, Wells Jaha, Echo, Jordan Green, Hope Diyoza, Roan, Sheidheda, Callie Cartwig, Gabriel Santiago, Russell Lightbourne
- Main Characters note Clarke, Bellamy, Octavia, Monty, Jasper, Raven, Murphy, Finn, Wells, Abby, Jaha, Kane, Cece, Roan, Lincoln, Echo, Emori, Jordan, Hope
- Sky People note Nathan, Harper, Zoe, Fox, Sterling, Atom, Roma, Charlotte, Myles, Eric Jackson, David Miller, Sinclair, Gina, Wick, Byrne, Bryan, Pike, Hannah, Diana Sydney, Shumway, Jake, Aurora Blake
- Grounders note Indra, Nyko, Niylah, Lexa, Anya, Gustus, Titus, Tristan, Artigas, Costia, Gaia, Nia, Ontari, Atohl, Ambassador, Luna, Shay, Derrick, Sea Captain, Otan, Gideon, Sienne, Zoran, Osias, Ilian, Madi, Knight, Sheidheda
- Mount Weather note Dante, Cage, Dr. Tsing, Emerson, Maya, Vincent, Reapers
- The City of Light note A.L.I.E., Gideon, Otan
- Historical Figures note Becca, Chris, Cole, Peri Gordon
- Eligius Corporation note Shaw, Diyoza, McCreary, Vinson, Nikki, Hatch
- Sanctum note Russell, Simone, Josephine, Kaylee, Daniel, Ryker, Priya, Miranda, Jasmine, Caleb, Gabriel, Xavier, Nelson, Jade, Delilah, Jae and Blythe, Rose, Gavin, Sierra
- Bardo note Cadogan, Anders, Levitt
