Behind the pseudonym "rioki" is Sean Farrell.

Sean Farrell Sean Farrell is an information technology engineer (Dipl. Ing. Informationstechnik) and is currently working for Siemens in Karlsruhe Germany. He has worked on Simatic PDM, WinCC and PCS7 Engineering for Siemens. He completed his higher level education at the University of Cooperate Education with the Federal Waterway Engineering and Research Institute. (Diploma Thesis)

Sean Farrell has also worked on a few hobby and open source software projects and is a Fellow of the Free Software Foundation Europe. He also likes drawing and practices Ninjutzu.

The pseudonym "rioki" is a contraction of Ryo-Ohki. Ryo-Ohki is a cat-rabbit-spaceship hybrid from the anime series Tenchi Muyo!.