King Dedede

King DeDeDe 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 Super Smash Brothers
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.

In Super Smash Brother Melee
He was nothing more than a trophy.

In Super Smash Brothers brawl
In Brawl, DeDeDe was 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 Dreamland.