Here is a cyberface for Washington Nationals phenom Bryce Harper. Just copy/paste the file into your main 2k12 directory and use Ty's editor to make changes as noted.
Note: Unfortunately I was unable to mod his overall overconfident, holier-than-thou, I'm far better than you attitude. But a few fastballs thrown high and inside at his head by a few elite pitchers or being sent back to the minors might humble him slightly. Nothing he can do about his big.squashed boxer's nose or his Dumbo sized ears though. :rofl: