The Fountain of Memories Maddox King Achilles Hercules Theseus Perseus Malek al Ghul's cult Bruce Wayne The Zootrope Mona Lisa's Cavern Series Arrow Main characters Oliver Queen Laurel Lance/Black Canary Tommy Merlyn John Diggle Thea Queen Capt. Quentin Lance Moira Queen Felicity Smoak Roy Harper/Arsenal Slade Wilson/Deathstroke Malcolm Merlyn/Ra's al Ghul Locations Starling City Lian Yu Hong Kong Coast City Organisations Argus The League of Assassins Other Lazarus Pit The_Undertaking_(event) League of Assassins' prophecy The Flash Main characters Barry Allen/The Flash Iris West Caitlin Snow Det. Eddie Thawne Cisco Ramon Eobard Thawne/Reverse-Flash Det. Joe West Locations Central City Organisations S.T.A.R. Labs Stagg Industries Central City Police Department Constantine Main characters John Constantine Zed Martin Chas Chandler Manny Locations Ravenscar Psychiatric Facility for the Mentally Deranged Heaven Hell Supergirl Main characters Kara Danvers Clark Kent ALex Danvers Jimmy Olsen Winn Schott Cat Grant J'onn J'onzz Locations National City Metropolis Organisations DEO Cadmus