This was me except with Vampire: The Masquerade. I had binders full of characters, all of the clan novels and trilogies, and held a repository of V:tM lore knowledge in my head. Used to doodle shadow tentacles onto little characters I made in notebook margins. I would argue on forums about what clan characters would be that borrowed liberally from the game’s aesthetics and settings (Blade and Underworld being the most egregious)

This was when I was in middle and high school. I’m 34 now and I’ve still not played a single game lol.