The artist blackguard used the name "blackguard" on Pixiv and the name "blackgang" on Hentai Foundry.
https://en.wikipedia.org/wiki/Blackguard is an English word, so the artist tag will probably end up getting changed to another tag type sooner or later. My guess would be on it becoming a character tag someday.
Should the artist's name be changed to blackgang ?
I already created this artist tag before I noticed that blackguard already exists.
Updated by Furrin Gok