Season 6 (Arrow)

Arrow was renewed for a sixth season by The CW on January 8, 2017. The show shifted from its usual airing on Wednesdays at 8 PM to Thursdays at 9 PM from this season onwards. It premiered on October 12, 2017. It is currently taking place in conjunction with the fourth season of The Flash, the third season of Supergirl, and the third season of DC's Legends of Tomorrow.

Main cast

 * Stephen Amell as Oliver Queen/Green Arrow and Oliver/Black Arrow
 * David Ramsey as John Diggle/Spartan
 * Willa Holland as Thea Queen
 * 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/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
 * 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/Heat Wave
 * Candice Patton as Iris West
 * Franz Drameh as Jefferson Jackson/Firestorm
 * Danielle Panabaker as Caitlin Snow/Killer Frost
 * Colin Donnell as Tommy Merlyn/Prometheus

Recurring cast

 * Adrian Holmes as Frank Pike
 * Audrey Marie Anderson as Lyla Michaels
 * Katrina Law as Nyssa al Ghul
 * Venus Terzo as Dr. Schwartz
 * David Nykl as Anatoly Knyazev
 * Kacey Rohl as Alena
 * Michael Emerson as Cayden James
 * Sydelle Noel as Samandra Watson
 * Johann Urb as Vincent Sobel/Vigilante
 * Tobias Jelinek as Sheck

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 Team Arrow with 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”.''

Confirmed plot points

 * Laurel Lance/Black Siren's backstory will be expanded upon.
 * Roy Harper will have a small arc that will begin in the 15th episode.
 * Nyssa al Ghul will return in episode 16.
 * Kyra Zagorsky has been cast as Athena.

Confirmed new characters

 * Athena: Bearing a scar across her face as an example of her fearlessness and determination, Athena aims to maintain the legacy of Malcolm Merlyn, her fallen commander — and thus sees anyone who was once associated with him as a potential threat.

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. The order starts from most recent member to the longest member of Team Arrow.  also included Black Siren's scream.