Wheelzen, a young Popopo was playing with his friends Dike and Shiner, when suddenly the ground started rumbling. Out of the ground came Sickly, a monstrous Popopo. He started terrorizing the citizens, and Wheelzen, Dike, and Shiner ran away. As they were running, a Popopo called Firebrush got knocked out of a bush by on of Sickly's monsters. The 3 friends grabbed Firebrush and ran away. When they were safe, Firebrush explained that he was alright, but that Sickly had came from an evil, parallel universe to Dreamland called Maerdworld. Sickly wanted to rule both universes, and they had to stop him, so they went on an adventure to defeat Sickly!
The first battle with Sickly is pretty easy. Sickly will jump up, shooting darkness blasts at you. When he leaps to the other side of the room, run where he was standing and press the cannon button to destroy him!
Vineator is a giant plant hanging from the ceiling. It tries to slow you down by shooting pollen. Inhale the pollen and spit it on the wall and it will stick. Do this 9 more times and the pollen will crawl up to Vineator and he will sneeze.
The other clone of Kirby is harder! This one can fly, and he will shoot stars at you as well. You must climb in the cannon and blast yourself to Kirby Half and spit the star at him 3 times.
This giant Lantern Ghost girl will shoot fire at you. Inhale it and shoot it at her 5 times. Then the sheet will fall off and the spirit posses the Lantern. Get on top of the Lantern, avoiding fire and press the switch on it and it explodes!
This is like the last battle, but he shoots more dark blasts. When you hit the cannon button, Sickly will disappear and reappear next to the cannon, and he destroys it. You must then inhale the dark blasts and spit 3 of them at Sickly.
Sickly's Behemoth Plane
This giant Dragon Plane is very dangerous! It appears on one side of the screen shooting cannonballs and trying to grab you. Then it flies to the other side and does the same thing. After a while, it will fly through the middle of the screen. Jump on it to find Sickly. He will run away from you, shooting you with darkness. Chase him until the edge of the plane and he will fall off. The plane crashes.
This is like Form 2, but when you defeat him, he gets back up and fires huge lasers from his mouth. Avoid until the room your in starts to crumble. Inhale 5 of the falling rocks and shoot them at Sickly.
This is just like Form 4, but once you defeat him, he poofs into nothingness. You dance around in triumph, but then he reappears behind Wheelzen, and he is HUGE. RUN AWAY! Once you run far enough, he shrinks to slightly-bigger-than-normal. He flies in the sky shooting dark bursts. Catch 3 of them and spit them back, and then he splits into 3. Destroy each one by hitting them each 3 times. Then he falls to the ground defeated!
Lord SicklyMcDoomshire and his Throne
This bonus boss in unlocked by getting all the Green Stars in the game. The level with this boss appears right behind the last level. Sickly's back, and he's in a giant throne robot! The robot shoots missiles, mines, bombs, cannonballs, lasers and can pinch you with its claws. You must inhale the bombs and spit them back out 30 times to defeat the robot. Once the robot is destroyed, Sickly jumps out. Do what you did in Sickly Form 2, and then he turns giant like in Form 5. Run away like in that form. Once he shrinks to normal, he grabs a staff of darkness and blasts you. Avoid his dark staff power until Sickly's rod runs out of power. Do what you did at the end of Form 5 after he shrunk, and he falls to the ground..... but makes one final effort to destroy you! He blasts you with dark lasers for 1 minute. Survive, and he is finally dead!