This research is based on an expression of 'alter ego' in the art of two dimensional (2D) stop motion animation. This study aims to identify the elements and principles in the art of 2D stop motion animation and the most effective way to express self-alter ego through the artwork. Alter ego is both an individual's personality formed voluntarily and usually the individuals with alter egos lead two different lifestyles. While 2D stop motion animation is a presentation of images displayed in rapid sequence using a technique where the caricature is photographed minimally in each sequences. From the result of experimentations and research conducted during the process of drawing and editing videos, the work entitled 'Alter Ego' is produced. Thi...