Good to know you agree with my signature.
Rocky has wrestled as Black Tiger in ROH before, I just think it's his preference to wrestle as himself rather than his NJPW gimmick unless it's storyline related to do so.
I have no idea why TJ doesn't work as Puma anymore, it'd give him more change to work on a character. And c'mon, TJ Perkins, that's just not a very good name I'm afraid. Now Puma, I don't think there's anything better than that ring name wise!
Puma > TJ Perkins!