Season 6 (Arrow)

"See, family, they rely on one another. Family trust each other. See, when the family does well, each member prospers, but if just one person betrays that family..."

- Ricardo Diaz

This is also the last season to feature Paul Blackthorne and Willa Holland as series regulars.

Main cast

 * Stephen Amell as Oliver Queen/The Hood/Green Arrow and Oliver/Dark Arrow
 * David Ramsey as John Diggle/Spartan/Green Arrow
 * Willa Holland as Thea Queen/Speedy
 * Emily Bett Rickards as Felicity Smoak/Overwatch
 * Echo Kellum as Curtis Holt/Mr. Terrific
 * Rick Gonzalez as Rene Ramirez/Wild Dog
 * Juliana Harkavy as Dinah Drake/Black Canary
 * Katie Cassidy as Laurel Lance and Laurel Lance/Black Siren
 * Paul Blackthorne as Quentin Lance

Special guest cast

 * Grant Gustin as Barry Allen/The Flash
 * Caity Lotz as Sara Lance/White Canary
 * Melissa Benoist as Kara Danvers/Supergirl and Kara/Overgirl
 * Manu Bennett as Slade Wilson/Deathstroke
 * Kirk Acevedo as Ricardo Diaz/Dragon
 * Colton Haynes as Roy Harper/Arsenal
 * Celina Jade as Shado
 * Victor Garber as Martin Stein/Firestorm
 * Tom Cavanagh as Harrison "Harry" Wells and Eobard Thawne/Reverse-Flash
 * Chyler Leigh as Alex Danvers
 * Dominic Purcell as Mick Rory
 * Candice Patton as Iris West
 * Franz Drameh as Jefferson Jackson/Firestorm
 * Danielle Panabaker as Caitlin Snow/Killer Frost
 * Colin Donnell as Tommy Merlyn/Prometheus and Christopher Chance/Green Arrow
 * Josh Segarra as Adrian Chase

Recurring cast

 * Adrian Holmes as Frank Pike
 * Audrey Marie Anderson as Lyla Michaels
 * Katrina Law as Nyssa al Ghul
 * Venus Terzo as Dr. Elisa Schwartz
 * David Nykl as Anatoly Knyazev
 * Kacey Rohl as Alena
 * Michael Emerson as Cayden James
 * Sydelle Noel as Samandra Watson
 * Kathleen Gati as Raisa
 * Tobias Jelinek as Sheck
 * Johann Urb as Vincent Sobel/Vigilante
 * Pej Vahdat as Sam Armand
 * Teryl Rothery as Jean Loring
 * Tina Huang as Kimberly Hill
 * Gina Ravera as Lydia Cassamento

Synopsis
After a violent shipwreck, billionaire playboy Oliver Queen was missing and presumed dead for five years before being discovered alive on a remote island in the North China Sea. He returned home to Star City, bent on righting the wrongs done by his family and fighting injustice. As the Green Arrow, he protects his city with the help of former soldier John Diggle, computer-science expert Felicity Smoak, his vigilante-trained sister Thea Queen, Deputy Mayor Quentin Lance, brilliant inventor Curtis Holt, and his new recruits, street-savvy Rene Ramirez and meta-human Dinah Drake. Oliver has finally solidified and strengthened his crime-fighting team only to have it threatened when unexpected enemies from his past return to Star City, forcing Oliver to rethink his relationship with each member of his "family".

Trivia

 * This season marks the first to have multiple versions of the intertitle which mostly follows a similar vein to DC's Legends of Tomorrow where the logos for each member are shown. was the first episode to introduce the second version that starts off with the canary for Black Canary followed by the Wild Dog logo for Wild Dog, the T for Mr. Terrific, the eye for Felicity Smoak, the Spartan helmet for Diggle, and finally the Season 6 arrowhead for Green Arrow. Some episodes, beginning with  to, did not include Diggle's emblem after he temporarily replaced Oliver who stepped down for a while to take care of William. The order starts from most recent member to the longest member of Team Arrow. The emblems for Wild Dog, Mr. Terrific and Black Canary in the midseason have changed to red instead of the usual color the others have, showing their change into the New Team Arrow. In , a jade dragon was shown instead of the Team Arrow emblems. From "Shifting Allegiances" to "Life Sentence", it had only shown the Green Arrow emblem.
 * Despite Rick Gonzalez and Julianna Harkavy joining the main cast after they recurred in the previous season in addition to the return of Katie Cassidy, Season 6 maked the last for longtime series regulars Willa Holland and Paul Blackthorne, and showrunners Marc Guggenheim and Wendy Mericle. Holland was credited up until her last appearance in while Guggenheim will transition into the role as an executive consultant beginning next season.
 * The Inside Arrow videos originally featured Wendy Mericle and Marc Guggenheim covering the first seven episodes and respectively. But starting with, then-future showrunner Beth Schwartz tookover to cover the last seven episodes of the season.
 * This is the first season that John Barrowman doesn't reprise his role as Malcolm Merlyn.
 * This is the first season since season 2 in which the main antagonist is not killed or presumed killed.
 * This is also the first season where the main antagonist's story spans on to the next.