I was randomly looking through what I've done to see if any of my edits was wrong, and I noticed someone, 8 months ago, changed the tag "André Vazzios" (an artist) for "Andre Vazzios". That person had something on their bio saying they were changing tags with characters that weren't accepted according to some git list (sorry, I don't know what those things are, not a dev, but there were some code lines with things that are not accepted on tags that I didn't understand).
However, I see "Pokémon" and not "Pokemon".