Kedamono Kangoku-tou is a doujin circle led by Rasenkiryuu, a web novelist/fanfic writer.

Most of artworks on his accounts/sites are actually illustrated by Tetete, an artist of his circle. Their weird "Touhou 4koma":/pools/2567 series are plotted by both of them and illustrated by Tetete. "The NicoNico video version":http://www.nicovideo.jp/mylist/17418880 of the series are encoded by Rasenkiryuu.

Artist name: ててて (Tetete)
Circle & site name: けだもの監獄島 (Kedamono Kangoku-tou)
The webmaster of the site / circle leader: 螺旋気流 (Rasenkiryuu)
Rasenkiryuu's solo circle name: けだ缶 (Kedakan)
kedamono kangoku-tou