There are multiple artists with this name:
1) Alias of Hagane Shizuka, used for tracks with experimental vocals.
2) Pacific Northwest hip-hop group from Bellingham. Members are Shillington (of Wilson Project) and Morgan (of Haunted Authors).
3) PlagueDoctor is also a YouTuber from Russia. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.