Puff Up

Puff Up is Jigglypuff's Final Smash in the video game, Super Smash Bros. Brawl. Once Jigglypuff opens up a Smash Ball, she stands in one spot, and begins increasing in size. She continues growing for about 5 seconds, before she finally reaches the limit, and begins shrinking at a faster rate. Any opposing player that hits Jigglypuff while in this state bounces off of her, in a similar fashion to the Bumper.

Jigglypuff's size during this Final Smash is gigantic - larger than Giga Bowser and the Landmaster. This allows Jigglypuff to cover most of the stage area, giving her a high chance of hitting an opposing player.

The distance an opponent flies apparently increases the larger Jigglypuff is, but it only causes damage if any contact is made with Jigglypuff as she is shrinking back to normal size. Jigglypuff is also unable to move around whilst using this move, so one should try and catch an opposing player close to an edge if using this Final Smash.

It should be noted that Puff Up is not an actual move within the Pokemon games. However, it may have been inspired by a Pokémon episode where a giant Jigglypuff is summoned by Jigglypuff.

A glitch in the Bridge of Eldin stage can allow the player to permanately play as Giant Jigglypuff after the Final Smash, but the effects wear off if Jigglypuff is knocked out. Furthermore, if Jigglypuff is captured by Yoshi's Egg Lay move during the glitch, she will increase in size exponentially every time she breaks out of the egg.

Trophy Info
''Jigglypuff's Final Smash. It wills its body to get bigger and bigger and bigger. It can't move, and it can't attack--all it can do is get bigger while everyone else looks on. However, it's invulnerable, and it overpowers all attacks to gradually push its opponents off the screen. It's a very simple technique, but how it's used determines its effectiveness.''