The 2018 Fleer Ultra Marvel X-Men Villains Rainbow Foil SP Proteus #99 is a single-parallel non-sport trading card featuring the character Proteus from the X-Men. Manufactured by Upper Deck in 2018, this original card is part of the base set and is a special edition Villains card, with a rainbow foil variety. This collectible card is a unique addition for fans of Marvel and the X-Men franchise looking to add a distinct and rare card to their collection.