From Kirbypedia

English Name:	Halfmoon
Japanese Name:	常夜の星ハーフムーン Tokoyoru Hoshi Haafumuun Eternal Night Star Halfmoon
Game(s):	Kirby Super Star -Milky Way Wishes
Boss:	Computer Virus
Category	Star

Halfmoon is a star level in Kirby Super Star's Milky Way Wishes. Milky Way Wishes is a non-linear game, it can be played at any time, but it is considered to be the last normal star of the game, since it connects directly to NOVA.

Halfmoon has two motifs; Stars and Chaos.

The Chaos is one half of the star. These rooms have high winds and a lot of enemies. The other half is made of space-like things, such as stardust, planets, and comets.

Halfmoon's mini boss battle is a paired match between Iron Mom and Cook Kawasaki. The main boss of the star is a powered up version of the Computer Virus. (Witch, Evil Knight, and Red Dragon).

Deluxe Copy Ability Hats that can be found on Halfmoon are the Mirror Hat, and the Ninja Hat.

Trivia

Halfmoon is the only time in the Kirby Games where Warp Stars could be used to warp somewhere inside the exact same room.

Locations (Game)

Stars: Pop Star - Floria - Aqualiss - Skyhigh - Hotbeat - Cavios - Mecheye Halfmoon - "?" - Rock Star - Aqua Star - Neo Star - Shiver Star Ripple Star - Dark Star

Countries: Dream Land - Mirror World

Other: Fountain of Dreams - Hyper Zone - NOVA