This portal shows the characters with at least five credited appearances but no starring status, organized by episode count. Vincent is also included.


This portal is based on the original timeline, and concludes at the end of the original timeline at the completion of the series.

Key

 On Island
Portal:Supporting Characters
 Off Island
Portal:Supporting Characters

Supporting Characters

 Aaron
Aaron Littleton
 Alex
Alex Rousseau
 Tom
Tom Friendly
 Cindy
Cindy Chandler
 Ethan
Ethan Rom
 Keamy
Martin Keamy
 Mars
Edward Mars
 Naomi
Naomi Dorrit
 Jacob
Jacob
 Karl
Karl Martin
 Phil
Phil
 Arzt
Leslie Arzt
 Nadia
Nadia
 Emma
Emma
 Zack
Zack
 Bram
Bram
 Cooper
Anthony Cooper
 Horace
Horace Goodspeed
 Jason
Jason (Other)
 Omar
Omar
 Roger
Roger Linus
 Carmen
Carmen Reyes
 Diane
Diane Janssen
 Liam
Liam Pace
 Randy
Randy Nations
 Sarah
Sarah Shephard
 Zoe
Zoe


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