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 8PM to Thursdays at 9PM from this season onwards. It premiered on October 12, 2017.

Main cast

 * Stephen Amell as Oliver Queen/Green Arrow
 * David Ramsey as John Diggle/Spartan/Green Arrow
 * 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

 * Manu Bennett as Slade Wilson/Deathstroke
 * Colton Haynes as Roy Harper

Recurring cast

 * Adrian Holmes as Frank Pike
 * Audrey Marie Anderson as Lyla Michaels
 * Venus Terzo as Dr. Schwartz
 * Joe Dinicol as Rory Regan
 * David Nykl as Anatoly Knyazev
 * Kacey Rohl as Alena
 * Kirk Acevedo as Ricardo Diaz/Richard Dragon
 * Michael Emerson as Cayden James
 * Sydelle Noel as Samandra Watson
 * TBA as Vigilante

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”.''

Confirmed plot points

 * There will be a four-way crossover with Supergirl, The Flash and DC's Legends of Tomorrow.
 * The title of the crossover is Crisis on Earth-X.
 * According to Stephen Amell, the theme of this season is family.
 * William Clayton will have a bigger role unlike the previous two seasons.
 * Dinah Drake will get a new love interest.
 * Vigilante's identity will be revealed this season and it will be a familiar face.
 * Laurel Lance/Black Siren's backstory will be expanded upon.
 * Slade will reunite with his son Joseph Wilson, who was mentioned in the previous seasons and will finally appear this season.
 * During the four way crossover, Prometheus will return. However, it will not be the Earth-X version of Adrian Chase, but of someone else.
 * Ricardo Diaz will appear this season.
 * In keeping with the season’s found-family theme, a "villainous cabal" rather than a single foe will torment Oliver and Team Arrow throughout the season.
 * Every member of the team will have his own big bad.
 * The big bad of Oliver Queen will be the big bad of this season.
 * The big bad of John Diggle will be Ricardo Diaz.
 * The big bad of Felicity Smoak will be Cayden James.
 * The big bad of Quentin Lance will be Black Siren.
 * The big bad of Dinah Drake will be Vigilante.
 * It has been hinted that Colton Haynes will reprise his role as Roy Harper very soon.
 * Thea's role will once again be reduced due to Willa Holland's request she made to the producers at the end of Season 4. In addition, Holland will be on a similar deal as she was last season according to Marc Guggenheim, but her episode count for this season is unknown.
 * Donna Smoak will return this season.

Confirmed new characters

 * Ricardo Diaz: Diverse. Hardened ex-con recently released from prison for crimes he didn't commit. Ricardo uses his freedom and 25 million dollars in settlement money to establish control over Star City's criminal underworld. He's a martial arts and fighting expert honed by years of life on the street and in prison.
 * Joseph Wilson:  The son of Slade Wilson who has followed his father's footsteps by joining the Australian military agency, A.S.I.S. Unfortunately, he is trapped in a remote prison fighting for his life while going under the alias Kane Wolfman.

Trivia

 * Originally going to have one intertitle just like the previous seasons, Season 6 marks the first to have multiple versions of the intertitle which mostly follows a similar vein to DC's Legends of Tomorrow's where the logos for each member of Team Arrow are shown. The original order consists the canary for Black Canary followed by the Wild Dog mask 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. The next episode is the same, but without Diggle's logo after he replaced Oliver as the Green Arrow. The order of logos is the order from most recent Team Arrow member to the oldest Team Arrow member.