Artist. Uses "…のやつ" in the titles his pixiv posts.
Nickname: ルッチーフ ("Ruch F" or Rucchiifu)
See also
- Pixiv account: http://www.pixiv.net/member.php?id=11565305
- Twitter account: http://twitter.com/ruch_f
- Niconico account (deleted): http://www.nicovideo.jp/user/42178275
- Niconico Seiga (deleted): http://seiga.nicovideo.jp/user/illust/42178275