He appears, and is memorably shot in each film: by Eli Wallach's character, Tuco, in the former and by Charles Bronson's character (in a shoot out along with two others) in the opening scene of the latter.
In every movie, he appears and is fatally wounded: by Eli Wallach's character, Tuco, in the first film and by Charles Bronson's character during a gunfight with two other individuals in the opening sequence of the second.