At first,i like anagrams.
My -usual- suspect is Ron.We have not any information on him.We don't know his voice and SURNAME.So,he is Ron Doe(not rondo,i'm not a celtics fan -.-).ron ''john'' doe ---> ono Red John.Ron is hanchman of red john ! Maybe he is roy.
whatever...
How do you find this theory?
plausible
unlikely