The fifth season of the emerald archer's saga will premiere Wednesday, Oct. 5 at 8/7c on the CW. Season 1 thread Season 2 thread Season 3 thread Season 4 thread The final arc of the fourth season saw the brutal death of Dinah Laurel Lance at the hands of Damian Darhk as the result of a devastating betrayal by Diggle's younger brother. This in turn led to Diggle murdering said brother. The team put their grief and their guilt on hold to prevent Damian Darhk from unleashing nuclear armageddon upon the world. In the aftermath, Oliver Queen is appointed interim mayor. But the accomplishment is bittersweet, because most of his team is gone: Disturbed by own ruthlessness at threatening the life of an innocent child, Thea Queen has decided to hang up her Speedy tights and do some soul searching lest she become too much like her father. Diggle, seeking clarity and atonement, has reenlisted in the military. By the end of the finale, Oliver and Felicity are the only ones left. The masked hero void will be filled by three new characters: Josh Segarra ("Chicago P.D.") has joined the cast as a new series regular. Filling the Black Canary's slot, he will play Adrian Chase, Star City’s new district attorney and an ally of Mayor Oliver Queen. During the day, he aims to clean up the streets through the legal system. At night, he takes more direction action on the streets as Vigilante. Rick Gonzalez ("Reaper", "Mr. Robot") will appear in multiple episodes starting with the season premiere. Filling Spartan's slot, he will play ex-Marine Jack Wheeler, whose reckless antics as the cocksure new hero Wild Dog prompt Green Arrow to take him under his wing. Madison McLaughlin, reprising her season four character, will recur over multiple episodes. Filling Speedy's slot, Evelyn -- last seen borrowing the Black Canary persona to mete out some counterproductive punishment on those who wronged her -- will forge her own identity as the masked archer known as Artemis. After three seasons with increasingly fanciful Big Bads -- Deathstroke (a chemically-enhanced supersoldier), Ra's al Ghul (the fearsome immortal leader of a vast, ancient and shadowy league of assassins) and Damian Darhk (a powerful sorcerer who can bend the laws of physics to his will) -- the show is returning to the more grounded elements of its earlier days with the fifth season Big Bad. Chad L. Coleman ("The Wire", "The Walking Dead") will recur as Tobias Church, "an imposing gangster looking to unite the various criminal enterprises in Star City under his own singular command." His goal is to fill the void left by H.I.V.E. following the death of Damian Darhk at the hands of the Green Arrow. The original casting notice described the character as an “apex predator” who “cuts his way through the shadows” by taking down “the biggest threat first.” Per Stephen Amell he does not have superpowers. The flashbacks this season, potentially covering the final year of his exile and leading up to the first scene from the pilot, will tell the story of his entanglements with the Russian mafia and how he got the Bratva tattoo.