Eris, not to be confused with Eri from the main series with a similar name.
Eris is a female character from Metal Slug Defense, appearing in the supplies menu and in the POWs list of World 3. She also appears in Metal Slug Attack with a unique sprite for the character stationed in the Build Up mode.
Eris wears a camouflage outfit consisting of different shades of green. Her outfit is cut short at her ribs and shows off her breasts. In addition, it has short sleeves. She wears a camouflaged skirt that matches with the outfit as well. She has blue eyes and long blonde hair that reaches to her back.
Freeing all of the POWS in her level awards the player the Slug Copter.