Ray Napierski, the guy in the fedora, is posing as a Roman Catholic bishop. The purple sash is actually a scarf, and his cossack was about a foot too short. Yet, somehow, he made is through at least one security check.
Here, Napierski greets Cardinal Sebastiana during the run-up to the conclave. Napierski says he is a member of the Italian Orthodox Church and part of an organization he calls Corpus Dei.