Fusion Monsters (Japanese: 融（ゆう）合（ごう）モンスター Yūgō Monsutā) are a type of Monster Card. The color of their card frame is violet. These cards are placed in the Extra Deck. To be properly Special Summoned, Fusion Monsters must first be Fusion Summoned (unless otherwise specified). If they leave the Extra Deck without being properly Special Summoned, they cannot be Special Summoned while they are banished or in the Graveyard. Most Fusion Monsters have a set of Fusion Materials, which are listed on the first line of the card's text. These are the materials used to perform the Summon of that monster.