- Not to be confused with Shield Break Jump
Shield Jump is a technique unique to Jigglypuff that is present in all three games. It is activated by having Jigglypuff's Shield break, either on purpose or by accident. Upon having its shield broken, Jigglypuff quickly shoots upwards. This can be an advantage or a hindrance, depending on the situation. Due to the shield and the speed of the jump, Jigglypuff cannot be interrupted while performing this technique.
Advantages
The first noticeable advantage became clear in Melee's Adventure Mode, when the player has to escape the exploding Brinstar. It was a vertical climb, and the time taken to complete it could be drastically reduced by using the shield jump. Brawl's Subspace Emissary allowed Jigglypuff to reach places few others could, and complete stages, such as Glacial Peak, in record time.
Custom Stages in Brawl
Brawl's introduction of Custom Stages created a new use for shield jumping: a platform high above the main battlefield that provides Jigglypuff with a camping spot that few other characters can reach or even hit with ranged attacks. Only Pit and R.O.B. can reach a similar height normally, although Meta Knight and Kirby, using their throws, and other characters, using bomb jumps, can also threaten Jigglypuff.
Disadvantages
In SSB, this was a flaw. It meant that Jigglypuff users had to be careful about shielding too much, because if it broke, it was an instant KO. This is still largely true in SSBM and SSBB. However, due to the different stages, if there are ceilings, it does not always result in a KO. If there is a ceiling above Jigglypuff when its shield breaks, it will be launched to the ceiling, spin for a few seconds, and then land and become dazed like other characters.
The Super Jiggly Jump
The Super Jiggly Jump is a Glitch in Super Smash Bros. Brawl involving Jigglypuff on stage New Pork City.
Using Jigglypuff, stand along the right side of the floating structure closest to the middle and shield until it breaks. If Jigglypuff is close enough to that wall it will bump it and continue flying without dying. If you use either mushroom during this event you can escape the stun when you revert to normal size, thus enabling you move freely during the fall.