Void Termina

Void Termina is the main antagonist and final boss of Kirby Star Allies. It is a Dark Matter-like demon that seeks to destroy all worlds.

History
In the past, Void Termina fought and was defeated by four warriors who used heart spears to seal its power. Afterwards, a race known as the Ancients rebuilt the world that Void Termina destroyed, creating legendary items to help the people adapt, including the Master Crown and Lor Starcutter. Those who still worshiped the deity were banished to the edge of the universe, eventually becoming the cult known as Jambastion.

The Jambastion obtained the vessel that contained Void Termina, and their leader, Hyness, believed he could revive the dark lord by collecting Jamba Hearts to fill in the missing parts of the Void according to a book of legend. Their ritual backfires and the Jamba Hearts scatter across Popstar, causing calamity, though Kirby and a few others were struct by beneficial pink hearts, allowing them to calm down others who were possessed by the Jamba Hearts. They were unable to stop Hyness' second attempt to revive Void Termina, sacrificing the Jambastion Mages and himself to complete the ritual.

However, before Void Termina could spread its evil across the universe once again, Kirby and his friends used the hearts they gathered to form the "Star Allies Sparkler", allowing them to defeat the monster both externally and internally. Void Termina makes one last attempt to blast the heroes, but they manage to overturn its power against it, destroying it and saving the universe.

A more powerful version of Void Termina can be fought in "The Ultimate Choice" minigame at Soul Melter difficulty. He uses the same attacks only stronger variations, but contains an additional phase where Kirby and friends fight Void Soul, which fights similarly to the regular Dark Matter phase, only it has much more health and rapidly moves across the stage unpredictably.

Trivia

 * Void Soul takes the form of both Kirby and Dark Matter, suggesting it may be related to them.