Philip Zimbardo (Self - Professor of Psychology, Standford University), Thibault Le Texier (Self - Author and Researcher), Dave Eshleman (Guard / Self - Participant), Doug Korpi (Prisoner #8612 / Self - Participant), John Mark (Guard / Self - Participant), Kent Cotter (Self - Guard Who Refused to Participate), Jerry Shue (Prisoner #5486 / Self - Participant), John Loftus (Guard / Self - Participant), Stephen Scott-Bottoms (Self - Professor of Contemporary Theatre, University of Manchester), Theresa Hanna (Self - Doug's Wife)