Waddle Doom is the boss of World 6 in Kirby Super Star Alpha. He is a larger Waddle Doo with battle armor.
After entering the boss door, Kirby, Prince Fluff, Tiff, Tuff, and Meta Knight find another piece to the Master Star. Unfortunatley, it is guarded by the menacing Waddle Doom, who fights them.
Waddle Doom leaps across the stage and will sometimes charge up a powerful beam attack.
To beat him, you can either use and ability against him. However, with normal or yarn Kirby or Prince Fluff, the player must inhale/grab the powerful beam attack and throw it back at him.