Batman #431 1989

Batman #431, published by DC in March 1989, presents "The Wall." Batman investigates a murder that leads him to mob boss Mugs Clifford and the League of Assassins. He confronts Master Kirigi, a martial arts trainer who taught both Batman and the assassins the "vibrating palm" technique. This issue is notable for the first appearance of Master Kirigi and for depicting a darker, more aggressive Batman still grappling with the recent death of Jason Todd, making it a key moment for collectors.