Board Thread:Questions and Answers/@comment-6345325-20130606050221/@comment-1038387-20130606182939

They say no names at all, if I remember correctly. My personal canon says it's Diane Meade and Captain Harding. There aren't many people who can be considered J'onn's supporting cast, as he's never been able to hold up a good run of comics since his original run in Detective Comics.