Imps

Imps are humanoid beings of various sizes and appearances, some of which possess magical powers that they use for their own purposes. They are often associated with goblins because they have a mischievous reputation.

Mainstream Smurfs Media
In "Smurfette's Dancing Shoes," Smurfette encounters a nameless Imp that seeks the lost Treasure of the Trolls who tricks her into marrying him by granting her a pair of magic shoes so she will be a graceful dancer. She is saved by her fellow Smurfs when they thwart the Imp of his wicked plans, and he is never seen again.

In "Vanity's Closest Friend," Vanity comes across a miniature Imp named Winky after feeling rejected by his fellow Smurfs. At first, he seems friendly and eager to feed Vanity's ego, but becomes a pest when he refuses to physically let go of him. As Papa Smurf explains, this type of Imp is known to find something, latch onto it, and maintain their hold of it with "the strength of twenty Smurfs."