They could start off with some misunderstandings. Izuku might accidentally get in John Wick's way, thinking he's helping. But as they get to know each other better, Izuku would start to learn from John Wick. John Wick could see Izuku as a young, eager protege of sorts and start to teach him things like how to handle different weapons and how to read his opponents better in a fight. They would gradually build a relationship based on mutual respect for each other's skills and values.
Sure. There are John Wick comics available. These comics might delve into untold stories or provide alternate takes on events from the films, giving fans even more to enjoy in the John Wick universe.
Maybe in the fanfiction, the Avengers need someone with John Wick's particular set of skills for a stealth mission. John Wick initially refuses but is later convinced when he realizes the threat is global. During the mission, they learn from each other's combat styles and strategies, and John Wick's no - nonsense attitude impresses the Avengers.
John Wick's story involves him facing off against powerful enemies after a personal tragedy. It's full of intense fight scenes and a plot that keeps you on the edge of your seat. The character's determination and skills drive the narrative forward.
John Wick is indeed fictional. It's a part of the imaginative world of movies, filled with exciting and often over-the-top action sequences that are designed to entertain rather than represent real events or people.