King Dedede

King Dedede (デデデ大王, Dedede Daiō) is the self proclaimed ruler of dreamland, who often appears as Kirby's rival. He is a playable character in Super Smash Brothers Brawl, but due to his absence in SSF2, he appears as a background character in Dream Land.

In the original Super Smash Bros. and Super Smash Bros. Melee, King Dedede made a mere brief cameo in the background of the Dream Land stage. He was once planned to be a playable character, but space and technical limitations caused him to only have the aforementioned cameo. Also in Super Smash Bros. Melee, he was nothing more than a trophy but in Super Smash Bros. Brawl, Dedede was finally a playable character.

In Super Smash Flash 2
In Super Smash Flash 2, he appears the exact same way he did in the original smash game. He appears as a cameo, flying in the background of Dream Land. However, he may also be an expansion character.

Trivia

 * In the Japanese version of Super Smash Bros. Brawl, King Dedede is merely referred to as "Dedede" (デデデ).