Void

Void (known in the splash screen as Astral Birth) is a boss and the final boss in Kirby Star Allies.

Physical appearance
Just like with Void Termina and Void Soul, it retains the same forms (such as its humanoid gorilla form, and its humanoid bird-like forms), but now appears to be more darker outside. It is also a spherical entity just like the aforementioned forms despite the only difference is the rainbow-pulsed veins showing, and appearing to be less reflective than its previous forms. His Dark Matter form now has one singular blood-red eye, similar to a certain foe from an old game.

Kirby Star Allies
Void is more or less a celestial and mysterious figure that is namely mentioned in a book of legends. One of his attacks, such as Dark Mind Laser greatly resembles one of Dark Mind's laser attacks involving mirrors.