Artist. He has two nicknames.

Name(1): 粒状斑 (Ryuujouhan, lit.'granule')
He uses this name on Pixiv and 'Touhou SouSouWa,' a bulletin board for Touhou-related fanfic novels.
Name(2): 斑 猪輔 (Madara Inosuke)
He uses this name on his webpage(closed) and Twitter.

See also

• Home page(closed): http://craisis.hp.infoseek.co.jp/homepage/index.shtml
• Pixiv account: http://www.pixiv.net/member.php?id=54643
• Nico Nico Seiga images: http://seiga.nicovideo.jp/user/illust/182237
• Nico Nico Douga account: http://www.nicovideo.jp/user/182237
• Twitter account: http://twitter.com/madara_inosuke