Bio/Psycho/Social aspects of human behaviors
In the world of entertainment, video games have become a colossal industry; Arguably eclipsing the film industry. One of the largest factors in this rise in the popularity of video games is realism. Wether it be graphics, level design, in-game physics, modern videogames are, in many aspects, alternate realities. One key piece of these games that has come a very long way, is character design. In most modern games, characters have become radically more realistic in many ways, such as motion capturing for character movement, professional voice actors, and visual graphics improvements from years prior.Much like characters portrayed on TV shows, video game characters often have a desirable, strong set of traits and personalities. They often have voiced opinions, a strong drive, and are typically very capable. Because of this, it's not uncommon for people (both young and old) to mirror the traits of their favorite characters. This is very common in children.
Why people do this has no singular answer, and is because of various biological, social, and psychological influences.
For social reasons, a person may mirror the traits of a (non)fictional character not only because of their admiration towards said character, but in hopes that they may gain the same success and status as the character.
From the psychological viewpoint, someone could don selected traits from a character because they look up to them in a way, sense that they lack said traits, and attempt to better themselves in their image. This isn't always a conscious drive, it may be done subconsciously as well.
The biological viewpoint is a little less relevant alongside the previous two, and the only obvious connection that I can make is regarding physical traits. While someone may mimic the personality traits of a character, they may also attempt to replicate their physical characteristics as well; Such as wanting to learn archery, copying hair styles, attempting martial arts, ect. This isn't always a bad thing, as it can serve as an incentive for someone to better themselves, or possibly find a new hobby.