This is Template88's red oni. It's a part of an Monster Girl art trade I started in the forums.
http://www.newgrounds.com/bbs/topic/1415523#bbspost25940034_post_text
You can find his original drawing here.
http://www.newgrounds.com/art/view/template88/oni
Make sure to check out more of his work.
http://template88.newgrounds.com/
You are free to copy, distribute and transmit this work under the following conditions: