Two Floow.

A Floow is an enemy in Super Smash Bros. Brawl's Subspace Emissary mode. It looks like a large black cloud with gray rectangles forming a humanoid shape and two small red eyes. Its trophy describes it as "a ghost patched with strips of darkness." A Floow's attack (some sort of scream) can cause a lot of damage quickly, and two Floows attacking at alternate times can trap a player easily. A particular annoyance of the Floow is its ability to steadily regain health, although it cannot move or attack while healing.

Trophy Description

An enemy that might be described as a ghost patched with strips of darkness. A Floow will float in the air and attack nastily from behind. Harboring pent-up resentment, a Floow's cries reveal one part sadness, one part madness. This especially hits home when gazing into its ghastly red eyes. After taking a certain amount of damage, a Floow will disappear.