"Protagonist" is essentially the PoV character of a work—it is not synonymous with "good guy". Since all playable characters are already in their own category, this should only include the other PoV characters we see through the eyes of in cutscenes, the anime, or literature.

That being said, I think Lady is a PoV character in several of those instances. Would you guys agree?(ಠ_ೃ) Bully! 04:01, April 12, 2013 (UTC)
Nope. This still doesn't make her a protagonist, or even a deuteragonist. An example of a deuteragonist would be Lucia, or Dante in DMC4 - but Lady is not as important in her game, DMC3. She is maybe a tritagonist - her role there is a bit too large for a mere supporting character. Lady is supposedly the narrator of DMC3 though... But that's a different trope.
Honestly, from my PoV (heh heh), this category doesn't really deserve to live. Like you said, all playables are already in their own category, and we can't really add any other characters to the list - all games are, at least to some extent (I am looking at you DMC4) about Dante after all. My signature is NOT short! 15:49, April 17, 2013 (UTC)
We do have the manga, novella, and comics, though. It's definitely Beryl at some points of the DMC2 novella.(ಠ_ೃ) Bully! 03:17, April 18, 2013 (UTC)
Community content is available under CC-BY-SA unless otherwise noted.