Floormaster

Essentially severed hands, Floormasters are close a relative of Wallmasters. In fact, the two species are identical in appearance. Unlike Wallmasters, who hide on the ceiling, Floormasters will lurk in passageways, but are just as ruthless and terrifying as their counterparts. When they glow green and clench their fists, move out of the way and slash them from behind. They will split into three smaller hands. But these tiny Floormasters should not be taken lightly. Upon splitting, the creatures will retreat, but after a few moments, they will turn to attack. If a tiny Floormaster grabs your neck, others are certain to follow, so take them out quickly. If allowed to live, tiny Floormasters will merge into one larger hand again. Due to their nature as creatures of darkness, Floormasters can be quickly dispatched by concentrated light, such as that directed by the Mirror Shield or carried by the Light Arrow. Din's Fire is also a great weapon if you don't have those just mentioned, but use it immediately after slashing a Floormaster, to prevent the tiny ones from getting too far from Din's effect.

Also, the Floormasters may be invisible. Use the Lens of Truth to see them.

Quote from The Legend of Zelda: The Minish Cap Floor Master figurine:

"Appears in dungeons. If these guys grab you, they’ll send you back to the start of the dungeon. Watch out when he attacks with others."