Durza is a minifigure that appears in the Inheritance Cycle theme.
Durza was a shade, or a person possessed by spirits. These spirits gave him unnatural powers which were used for evil. He was defeated by Eragon, in the book, Eragon. While Saphira and Arya distracted Durza, Eragon who was already wounded, stabbed the shade through the heart. The shade then died making Eragon a legendary "Shadeslayer".