"Princess Peach's sweet voice will soon be the bread that makes the sandwich of Cackletta's desires! And this battle shall be the delicious mustard on that bread! The mustard of your doom!"
Cackaletta's right-hand bean from the game Mario & Luigi: Superstar Saga. Fawful appears as a tiny green man with a red cape, hanging from his 'headgear,' a device that allows him to fly, spit fireballs and vacuum up Peach's voice, among other things. Fawful is by far the best character in M&L:SS, and in my opinion the single most hilarious character in any game, ever. He speaks in the manner of the classic poorly-translated games we all love (such as Zero Wing, and I know you do), which had me cracking up on more than one occasion. Shortly After the game's release it wasn't uncommon for a M&L:SS player to use "I HAVE FURY" in conversation. This, his most memorable phrase, will probably retain its popularity as an internet meme for some time.
"Your lives that I spit on are now but a caricature of a cartoon drawn by a kid who is stupid!"
When fighting Fawful, he will usually begin the battle hovering with his headgear, throwing fireballs at our heros. There are fairly easy to avoid. After several well-timed attacks his headgear will be dislodged, and he will resort to ramming you.
If he yells "Fink-rat!" it means he'll attack one Brother, the colour of the text he speaks.
If he yells "Have you readiness for this?" then he's going to attack both Brothers, starting with the one matching the colour of his text.
Fawful doesn't really ever offer much challenge in battle, although you might have difficulty with your timing if you're still spasming with laughter from the pre-battle speech.
"In the last moments of the finale of the finale, when relief leads to negligence that begets rashness... That is when the comeback that faltered comes back and beats your pathetic comeback that I scoff at!"