PK Starstorm

PK Starstorm is the Final Smash of both Ness and Lucas since Super Smash Bros. Brawl. It is based on a PSI attack which appears in both EarthBound and Mother 3. When used in Super Smash Bros. Brawl, the character summons meteors that rain down on the stage, damaging anybody hit by them. The meteors summoned by Ness rain down outward and individually, knocking away opponents and dealing more damage, while Lucas's rain down in an inward direction in groups, but deals slightly less damage compared to Ness's version.

In Super Smash Bros. for Nintendo 3DS / Wii U, PK Starstorm is entirely changed. The meteors no longer rain down randomly across the stage, instead being concentrated in one area, raining down from the center of the stage. The angle at which the meteors fall can be adjusted with the control stick and the meteors now deal fire damage. Lucas's deals less damage than Ness's, but has a higher knockback.

In Super Smash Bros. Brawl and Super Smash Bros. for Wii U, both Ness and Lucas each have a trophy for their variation of PK Starstorm, distinctly titled PK Starstorm (Ness) and PK Starstorm (Lucas). In the latter game, since Lucas was a downloadable character, versions of the game prior to 1.0.8 did not have an identifier next to Ness's trophy.

Trivia

 * In the MOTHER / EarthBound series, Ness and Lucas do not actually learn PK Starstorm. According to their respective Final Smash trophies in Super Smash Bros. Brawl, it is stated that they were instead taught by the party members that learn the move in their respective games (Poo from EarthBound taught Ness, and Kumatora from Mother 3 taught Lucas).