Feargus Urquhart, Chris Avellone, Chris Parker, Darren Monahan, Chris Jones
Todd Howard, Tim Cain, Leonard Boyarsky
Gabe Newell, Marc Laidlaw
Hidetaka Miyazaki, Eiichi Nakajima
Answer
Obsidian Entertainment was founded by Feargus Urquhart, Chris Avellone, Chris Parker, Darren Monahan, and Chris Jones. They were all former employees of Black Isle Studios, which closed down in 2003.
Obsidian Entertainment Mental Mastery Quiz: 20 Questions to test your mastery of the subject