Billy Hatcher is a character canidate for SSB4. He has appeared in his first game for the Nintendo Gamecube so he is very likely to appear. He gains a new, fully-functioning voice in the form Ruth Shiraishi. His attacks derive from his own game and would make perfect sense.
Here's some quotes he'd say in the game.
"Hey, why must I fight you? We're not enemies!"
"Yes sir! Let's go, Mario."
"Let's do it!"
"Hey, stop it! I don't want to fight with you!"
"Oh, no! Luigi!"
"I´ve gotcha now!"
"I can't let you beat me! I must become better!"
Neutral: Rooster Call
Up: Egg Bounce
Down: Egg Roller
Final Smash: Golden Egg