Super Dedede Jump

Super Dedede Jump is King Dedede's Up Special Move. He jumps extremely high, then crashes down to Earth. If a foe is struck by Dedede's underside on the way down, they are spiked. If caught under Dedede's weight upon impact, they are shot at a 45-degree angle sideways. Foes can also be hit by two stars that appear at Dedede's sides upon impact with the ground. You can adjust the angle of the jump, but once in the air, you lose control over it. He is vulnerable when he lands, so one can cancel the move by pressing down if it looks risky. However, if it is done too close to when Dedede lands, he will become even more vulnerable, forcing strategy when using the move. If Dedede hits a ceiling while using the move, he will fall Helplessly.

Unlike most other Up-B recoveries in the game, this move does not auto-sweetspot the edge. However, if the move is cancelled close enough to the edge, Dedede will snap to it. It is also possible to use the Super Dedede Jump as an edgeguarding move.

During the first half of this attack (when he jumps into the air) king Dedede can take damage, but cannot flinch.

Stars are produced around King Dedede when he lands, similar to Yoshi's Yoshi Bomb.

Origin
The Super Dedede Jump is one of King Dedede's main attacks from the Kirby series. Being able to cancel the attack and land normally is a new addition added in Super Smash Bros. Brawl.