marshmallow_(victima013)
Artist.
Nickname: マシュマロ (Marshmallow)
The other name: 地面からにょっきり (Jimen Kara Nyokkiri)
Old name: 地面です (Jimen Desu)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=1951366
* Twitter account: http://twitter.com/hundehosi_no
* Old twitter (deleted): http://twitter.com/umoretemasu