Here is that of which I am guilty:
-If you carry a 24-disc CD case dedicated solely to burned MegaMan game music and remixes thereof (and it's still not enough room), you might be a fan.
-If Zero and Iris adorn every screen and window of your homebrew MP3 player skin, you might be a fan.
-If X and Zero's armor kits are the only thing you put on display as often as your original Ultrazord, you might be a fan.
-If you have 282 (and rising) images of Iris that aren't even NSFW (at least then they'd be there for a reason) in their own dedicated folder, you might be a fan.
And last but not least:
-If in a certain SNES classic game by Enix you named God after a First-Class Purifier, you might be a fan.
Also on DeviantArt, Rumble, DLive.tv, and the Fediverse (@freespeechextremist.com and @bae.st)