The Return

Protagonists

 * Oliver Queen
 * Thea Queen
 * Maseo Yamashiro
 * Malcolm Merlyn
 * Laurel Lance
 * Quentin Lance
 * Tommy Merlyn

Antagonists

 * Ra's al Ghul
 * Slade Wilson
 * Mockingbird (Amanda Waller)
 * Jordan Kern
 * China White (Chien Na Wei)
 * Peter Kang
 * Matthew Shrieve
 * Captain Boomerang (Digger Harkness)

Other Characters

 * John Diggle
 * Andy Diggle
 * Felicity Smoak
 * Robert Queen
 * Moira Queen
 * Lucas Hilton
 * Yao Fei Gulong
 * Shado
 * Taiana Venediktov
 * Sara Lance
 * Frank

Teams and Organizations

 * A.R.G.U.S.
 * SCPD
 * League of Assassins
 * Starling City Rockets
 * Weathersby Posner
 * United States Military

Species

 * Humans

Objects and Concepts

 * Oliver Queen's Bow and Arrow
 * Alpha-Omega
 * Alpha
 * Omega
 * The List

Locations

 * Earth-1
 * Earth
 * United States of America
 * Washington
 * Starling City
 * Thea Queen's Loft
 * Queen Mansion
 * San Francisco
 * People's Republic of China
 * Hong Kong
 * Lian Yu
 * A.R.G.U.S. Maximum Security Prison
 * Nanda Parbat
 * Corto Maltese