I have been thinking about this for a while who is Red X?
Red X was originally Robin. An identity created so he could get closer to Slade. After all was done Robin gave up the identity Because of the mistrust of his fellow Titan members. But then the costume was stolen out of the security room where Robin had hidden it. Now we come on to the question who has stolen it? We know he is some what of an anti hero.
I think it is Robin from the future, gone back in time to train this current Robin. But that wouldn't explain how the suit went missing. If you ask me it is mind boggling lol
Red X