Fawful

 is a recurring antagonist in the Mario & Luigi series.

Why He Rocks

 * Has lots of memorable quotes like "I HAVE FURY!".
 * His infamous "Mustard of Doom" quote.
 * He is somewhat, an awesome villain to be in a Mario spin-off title.
 * His broken english is one of the hilarious moments in the Mario & Luigi series.

Bad Qualities

 * Sometimes, his voice can get rather annoying and irritating.