Knockout Punch

The character is skilled at cold-cocking unprepared opponents.
Prerequisites: Brawl, base attack bonus +3.
Benefit: When making the character’s first unarmed attack against a flat-footed opponent, treat a successful attack as a critical hit. This damage is nonlethal damage.
Special: Even if the character has the ability to treat unarmed damage as lethal damage, the damage from a knockout punch is always nonlethal.