Meta Knight

Meta Knight is one of Kirby's rivals and sometimes friend. Meta Knight was born in Dream Land, which is also where Kirby grew up.

Super Smash Bros. Series
Although he did not appear playable, Meta Knight had a trophy dedicated to him in Super Smash Bros. Melee. It was randomly won through Collect the Trophies on Classic Mode, or the Lottery.

However, Meta Knight will appear as a playable fighter in the upcoming Super Smash Bros. Brawl. His purple cloak will be able to transform into wings, just as his Trophy from Super Smash Bros. Melee said. He will utilize his sword, the Master, as his main weapon of choice. He can also multi-jump like Kirby and Jigglypuff and, by using his wings, he can glide. He will also have a stage in his honor, his very own war ship called the Halberd. Interestingly, despite being one of Kirby's species, Meta Knight's attacks, are not clones of Kirby's attacks, due to Meta Knights sword. This hinted a possible end to the clones from Super Smash Bros. Melee. Meta Knight's voice actor from the Kirby series, Atsushi Kisaichi, will be providing Meta Knight's voice in Super Smash Bros. Brawl.

Trophy Information from Super Smash Bros. Melee
''The mysterious head of the Meta-Knights, he wields his sword with dignity. He delivered his sword to Kirby and demanded single combat in a show of knightly honor; his strict adherence to his code of ethics makes him a rarity in Dream Land. Sometimes he throws off his cape in battle. It occasionally transforms into wings.''

Trivia

 * Meta Knight was also in Nintendo Monopoly, where he took the position of St. Charles Place, and costed $140.