Plumbio, like Giga Wario, is also a hidden boss. The only way to unlock him is to beat all of the non-hidden bosses with Waluigi. This boss if very strange given he dosen't talk, but only yell. If you beat him, he is a hidden costume for Waluigi
________________________________________________________________
Type: Human
Strangths: Vey fast and a good jumper too
Weakness: His beard
How to kill: He will first jump around and try to ground pound you. Once you trip him, use you Poltergist 3000 to suck up his beard. Once you do it once more, his beard will come off. All you have to do then is cetch him befor his beard grows back.
Height: 7 feet
Weight: Unknown