Who is the character John Wick's old ally, Marcus, and how does he fit into the John Wick storyline?

Marcus is a character in the John Wick film series, portrayed by actor Willem Dafoe. He is an old ally of John Wick (played by Keanu Reeves), a former hitman who left his old life behind after meeting his wife. When John's wife dies, Marcus is one of the few people he trusts to help him.

Throughout the series, Marcus serves as a mentor and friend to John, providing him with information and support as he navigates the dangerous world of assassins and criminals. Marcus is also a skilled marksman and helps John during some of the films' action scenes.

Marcus appears in the first two John Wick films and plays a significant role in John's story. He is a reminder of John's past and serves as a link to the old life he left behind.

Marcus is John Wick's old ally and friend. He is a retired hitman who now runs a small security firm. Marcus is the one who introduces John to the world of assassins in the first John Wick movie. He also helps John to get his life back on track after the death of his wife. Marcus is a loyal friend and a valuable ally to John. He is always there for John when he needs him, and he never hesitates to help him out. Marcus is a complex character who is both good and bad. He is a killer, but he is also a loyal friend. He is a man of his word, and he always does what he says he is going to do. Marcus is a valuable asset to John Wick, and he is a key player in the John Wick storyline.

In the first John Wick movie, Marcus is the one who introduces John to the world of assassins. He tells John about the Continental, a hotel that caters to assassins. Marcus also tells John about the High Table, the organization that oversees the assassin world. Marcus is a valuable ally to John in the first movie. He helps John to get his life back on track after the death of his wife. Marcus also helps John to find the people who killed his dog.

In the second John Wick movie, Marcus is again a valuable ally to John. He helps John to escape from the Continental after John is excommunicado. Marcus also helps John to find the people who are trying to kill him. Marcus is a loyal friend to John, and he is always there for him when he needs him.

In the third John Wick movie, Marcus is again a valuable ally to John. He helps John to rescue his dog, Daisy. Marcus also helps John to fight off the Russians who are trying to kill him. Marcus is a key player in the John Wick storyline, and he is a valuable asset to John Wick.