King Dedede is Kirby's archenemy, the greedy self-proclaimed king of Dream Land on the Planet Popstar. He is angry at Kirby for having all the residents of Cappy Town, taking his anger out on the townspeople. Despite having a mean disposition, he is a nice guy and has reluctantly accepted Kirby as the real hero of Dream Land as he would help him against a mutual enemy that threatens Dream Land.
Super Smash Bros. Brawl
King Dedede is a playable character in Super Smash Bros. Brawl, making him the third playable character from the Kirby series. He wields his trademark hammer, swinging it in most of his standard attacks, like the Ice Climbers, and has very powerful hammer-based attacks.
Super Smash Bros. 4
King Dedede returns as a playable character in Super Smash Bros. 4. He has a more cartoonish look than his appearance in Super Smash Bros. Brawl, reminiscent of his appearance in Kirby: Right Back at Ya!. He has gained a new Final Smash, Dedede Burst.
Super Smash Bros. Ultimate
King Dedede returns as a playable character in Super Smash Bros. Ultimate. He once again features a new Final Smash; in this case, it is Dede-Rush, which is described as a cage fight where, in his Masked Dedede form, he attacks any trapped opponents with a barrage of missiles and his Jet Hammer.
- King Dedede's voice actor, Masahiro Sakurai, is the creator of the Kirby and the Super Smash Bros. series.
- King Dedede is one of four characters to have appeared since Brawl to have a different Final Smash across every installment.
- King Dedede has the worst air speed of any fighter.