Character:  Barney Ross, mercenary with unquenchable thrist for honor.  (Not the Rabbinical student-turned-boxer from the 1930s.)

Age:  Stallone turned 64 just before The Expendables was released, 14 years after becoming elegable for AARP.

Badassery:  Something in that tattoo ink preserved the muscle, testosterone and overall heroism of Stallone's Ross.  Alas, it did nothing to help with those awful zingers.