Kapars throw their circular boomerangs at Kirby just like Sirkibble [sic] throws his hat. Watch out—they jump up to catch Kirby, and that boomerang does damage going out and coming back.
— Description • Kirby 64: The Crystal Shards Official Strategy Guide (Prima)

Kapar is a green, duck-like enemy with webbed, dark green feet and round eyes, as well as a beak. He first appeared in Kirby's Dream Land 3 and later in Kirby 64: The Crystal Shards. He sits in one place, and occasionally jumps up and throws his spiky, hollow, darker green hat that is on the bald top of his head at Kirby. He is also capable of swimming. Kapar gives the Cutter ability. In Kirby 64: The Crystal Shards, a giant Kapar appears in Aqua Star Stage 3 as the mid-boss, with two Bumbers to spit out at him. This also makes the giant Kapar the first mid-boss to not have smaller versions of himself for Kirby to inhale and spit back at him, but instead different enemies from himself.

Kapar is loosely based on the mythical Japanese monster, Kappa.