|“||Necrodeus hates light and wants to steep the world in darkness. As a pirate, I can respect that. But with no light, all my treasure would cease sparkling. And I can't have that. Do everything in your power to stop him. My gold must shine!||„|
|~ Daroach, about Necrodeus|
Necrodeus is the leader of the Skull Gang and the main villain and final boss of the video game, Kirby Mass Attack. Necrodeus' goal is to enshroud the world in darkness and get rid of light.
In order to prevent Kirby from defeating him, he splits the Star Warrior into 10 smaller "Kirbies" each with a tenth of the original Kirby's power.
His name means "Death God" in Latin.
While exploring the Popopo islands, Kirby was confronted by Necrodeus. Kirby attempts to fight him but Necrodeus uses his staff to split Kirby into 10 mini-Kirbies and kills all but one of them.
Thus, Kirby sets out to stop him and his gang, fighting his way through Necrodeus' Skull minions and gaining more Kirbys through his heroic heart.
Eventually, the Kirbies gather all the Rainbow Medals, allowing them to march their way up to Necrodeus's lair, Necro Nebula. With his minions defeated, Necrodeus fights the Kirbies personally.
Necrodeus's attacks are slow, but very strong, capable of knocking out a Kirby in one hit. The fight is divided into three parts. In the first phase of the boss battle consists of Necrodeus mainly attacks with his hands, which he attempts to use to crush the Kirbys. Prior to attacking, Necrodeus will raise one of his hands and hold it in the air for a short while, giving the Kirbys the chance to move out of the way.
When Necrodeus brings down his fist, it gets stuck in the ground, allowing the Kirbys to attack it and break the orbs on the back of his hands. When one of his hands' orbs is destroyed, Necrodeus will summon Skullions to repair it. Kirby needs to destroy the orb on his other hand before they can finish repairing the first orb. After both of his hands are damaged, Necrodeus roars and the battle moves to its second phase.
Necrodeus will now try to close his palms around the Kirbys. He will also use his index fingers to send sparks of electricity towards the Kirbys. In order to defeat him, the Kirbys need to pummel his hands into the ground and attack the orange circles that are on them, eventually destroying the hands.
Reduced to his head, Necrodeus shifts the fight to its final phase. He will use his mouth to spew out metal mines that shoot lasers in different directions fire large spheres of electricity that bounce around the screen. He can also discharge a giant laser from his mouth and summon Skullions to aid him. The Skullions will attempt to grab one of the Kirbys and bring it to Necrodeus so he can devour the it.
In order to defeat Necrodeus, the Kirbys will have to attack the purple eyeball inside his mouth. Once the eye takes enough damage, Necrodeus's head will be weakened, allowing the Kirbys to attack it. After several hits, Necrodeus will blow up, bringing the battle to an end.
After Necrodeus is defeated, his staff will appear allowing the 10 Kirbys and their heart to become one whole being again and set the rest of Dreamland back to normal.
- He is a "head and hands" boss, similar to Wham Bam Rock from Kirby Super Star and Whan Bam Jewel in its remake.