Thread:Greater good/@comment-2041242-20150818174239/@comment-112155-20150818183248

Actually, we must not place an indefinite article (a or an) before the name of the roles. The are credited as having played "Sokovian Citizen", "Security Guard", "Bystander"....

Therefore, those names are, in this context, proper names, and proper names don't have an indefinite article.