| John Wick | a legendary hitman who previously worked for the Tarasov Mob until his retirement. He retired in order to spend time with his wife, Helen Wick, who later died of an unidentified illness. |
| Viggo Tarasov | a notorious Russian crime boss who was the former head of the Tarasov Mob in New York City as well as Iosef Tarasov's father, and an enterprising businessman with questionable roots. He also was the former employer of John Wick. |
| Iosef Tarasov | a Russian mobster and the son of Viggo Tarasov, leader of the Tarasov Mob in New York City. He was also the nephew of Abram Tarasov, Viggo's successor of the Tarasov Mob. |
| Winston Scott | the owner of the New York Continental Hotel, an establishment that functions as a neutral territory for hired killers. No business is allowed to be conducted on hotel grounds without incurring terrible penalties, which are often ordered and overseen by Winston. |
| Helen Wick | Helen Wick was the wife of the ex-hitman, John Wick.Helen's death serves as the catalyst to John's return to the world of assassinations, |