In Skylanders, "Dark Spider" refers to a Shadow Trap Crystal used in Skylanders: Trap Team to capture and play as the shadowy spider enemy from the game, distinct from other dark variants like Dark Spyro (a special version of Spyro). The Dark Spider Crystal allows players to summon the elusive spider character, adding a unique, darker tactical element and collectible value to Trap Team gameplay, enabling you to control a creature that typically acts as an enemy.