The term PART OF SUPERMAN'S COSTUME can be summarized as the CAPE, which is a four-letter word. The CAPE is an iconic part of Superman's costume and has been featured in many iterations of the character since his first appearance in 1938. It is usually depicted as a long, flowing red CAPE with a yellow or gold interior. The CAPE is often used to emphasize Superman's heroic stature and is a symbol of his power and strength.