One's primary character, in video game lingo

MAIN

Think of the word that describes the central hero you control at the start of most games.

In video games, "main" refers to the character a player uses most often—their primary or go-to choice. The clue plays on this gaming slang by framing it as "one's primary character," which directly points to the answer. It’s a straightforward definition with no hidden wordplay, just a nod to how gamers talk about their favorite in-game avatars.