Artist. Likes personification of trains. He has another, real-name account. However it's off topic for the danbooru.
Japanese name: 守口大根 (Moriguchi Daikon), 大根 or 根者
Circle & site name: Full Notch!
https://www.pixiv.net/users/2196
https://www.pixiv.net/stacc/d-con
https://twitter.com/gad_daikon
https://twitter.com/m_daikon
https://twitter.com/intent/user?user_id=59767681
https://twitter.com/intent/user?user_id=225659176
https://seiga.nicovideo.jp/user/illust/2196077
http://www.nicovideo.jp/mylist/2196077
https://www.nicovideo.jp/user/2196077
https://pawoo.net/@m_daikon
https://sketch.pixiv.net/@d-con
http://livedoor.blogimg.jp/fullnotch/imgs/1/7/
http://full-notch.ldblog.jp
http://mixi.jp/list_album.pl?id=456635
http://mixi.jp/show_friend.pl?id=456635
http://video.mixi.jp/list_video.pl?id=456635
http://full-notch.sakura.ne.jp
http://p.twipple.jp/user/m_daikon
http://twitpic.com/photos/gad_daikon
http://twitpic.com/photos/m_daikon
http://yfrog.com/user/gad_daikon/photos
http://yfrog.com/user/m_daikon/photos