Artist.

Pixiv nickname: 初広いたと (Hatsuhiro Itato) (reading is a best guess)
Niconico name: イナゴパフェ (Inago Parfait)
Old names: 食用ぱんつ (Shokuyou Pants) or 食ぱん (Shoku-pan)

See also

• Pixiv account: http://www.pixiv.net/member.php?id=968217
• Niconico account: http://www.nicovideo.jp/user/2985537
• Niconico Seiga: http://seiga.nicovideo.jp/user/illust/2985537?target=illust_all