Wildcat
Wildcat is built entirely on a Batman base.  I first used my Dremel to grind off Batman's utility belt, gloves and boots.  I also ground off his brief line.  I then cut off his bat ears with my X-acto knife.  Using Sculpey, I built Wildcats ears, nose, cheeks and jowls.  The cheeks took some trial and error to get right.  Finally, I painted and sealed the figure.