A mysterious artist whose "nickname" and "profile" have zero length (empty).

Commonly used temporary names: (HN不明), (Unknown Handle Name), 「」, 『』, 「」-san or 正真正銘の名無しさん (Genuine Anonymous)
Pixiv username: mononoke

See also

• Pixiv account: http://www.pixiv.net/member.php?id=53928