PK Starstorm is a Final Smash in the Super Smash Bros. series. It is performed by pressing the (B) Button after breaking a Smash Ball. PK Starstorm can be used in Super Smash Bros. Brawl and Super Smash Bros. for Nintendo 3DS/Wii U by both Ness and Lucas.
In Super Smash Bros. Brawl, when performed, a storm of shooting stars streak across the battle field, which strike the stage, and does heavy damage to any opponent hit by the stars. It is considerably more effective on smaller stages, like Final Destination, as there is limited space to avoid the stars. The move differs slightly for the two characters who use it; Ness' Starstorm spreads out in a "fan-like" shape, each strike dealing 20% damage, whereas Lucas' Starstorm rains downwards in parallel lines, each strike dealing 14% damage, and falls slower than Ness' Starstorm.
In Super Smash Bros. for Nintendo 3DS/Wii U, the move fires a concentrated stream of stars, which can be moved left and right across the screen by the player. Each hit does about 8% damage.
- In EarthBound and MOTHER3, this move is actually not known by Ness and Lucas, but by Poo and Kumatora respectively. A possible explanation for this discrepancy is offered in Super Smash Bros. Melee and Brawl, which states that Poo and Kumatora taught each of them the technique for their appearances in the Super Smash Bros. series.
- An unused voice clip of Ness can be found in the System Debug of Super Smash Bros. saying "Starstorm!", along with several other clips of the sort. Final Smashes were said to have been planned to appear as early as the first game.