“Pota­to Head is a rather cyn­i­cal Mr. Pota­to Head doll, of the com­mon design of Playskool. Andy often casts him as a vil­lain in his games, which seems to be the rea­son he can be so cyn­i­cal and irri­ta­ble, being cast as the bad guy so often. Although he’s sar­cas­tic, cyn­i­cal, rude, and has an acer­bic point of view, deep down he has a heart of gold, he (…) is pre­pared to go to lim­it­less lengths to save his friends.”

Source: http://disney.wikia.com/wiki/Mr._Potato_Head