Eris typically refers to: Eris , the largest known dwarf planet in the Solar System (provisional designation ) Eris , in Greek mythology the goddess of discord, and the Goddess of Discordianism Eris , a genus of jumping spidersIt may also refer to: Eris , a humorous representation of the Greek goddess in the television show The Grim Adventures of Billy and Mandy Eris , a Vorta character played by Molly Hagan Eris, a character from the