PK Starstorm
PK Starstorm is the Final Smash of both Lucas and Ness in Super Smash Bros. Brawl. The character yells "PK... STARSTORM!", summoning a rain of meteorites ("shooting stars") down, striking the stage and any opponents in their way.
The move differs slightly for the two characters who use it; Lucas' meteorites rain in down in groups which point slightly inwards, dealing 14% damage each and knocking the opponent sideways. Conversely, Ness' shooting stars spread out individually in a fan-like shape, dealing 20% damage and knocking the opponent upward.
These differing properties, particularly the meteorites' direction of travel, favour Lucas on smaller stages and make Ness' Starstorm the more effective on larger ones.
Trophies (2)
PK Starstorm (Ness) trophy
Ness as he calls down a host of damage-dealing stars in his Final Smash. Everyone on the screen must dodge like crazy to avoid getting hurt, but that's no easy task. This attack appeared in the Mother series, but it was Poo, not Ness, who wielded it. Perhaps Poo taught Ness the secret of the attack for use in Super Smash Bros. Brawl.
PK Starstorm (Lucas) trophy
Lucas' Final Smash. He pulls a large group of stars from the sky and sends them smashing down among his enemies, causing damage to one and all. In Mother 3, this move was used by Lucas' traveling companion, Princess Kumatora. As Ness learned this move from Poo, Princess Kumatora taught Lucas when he learned he would appear in Super Smash Bros. Brawl.
Origin
PSI Starstorm ("PK Starstorm" in Japan, hence the name in Brawl) first appeared in EarthBound as a very powerful attack which was impossible for enemies to avoid. The move is never taught to Ness, but it is taught to Poo by the Star Master, being that character's signature move. There are also two different levels of the move: PSI Starstorm α, and PSI Starstorm Ω. The amount of damage that PSI Starstorm can vary from 270 to 900 damage.
PSI Starstorm later appeared in Mother 3. It acts the same way as it did in EarthBound, except there is now only one level of it, and can deal between 650 and 680 damage. In Mother 3, Lucas also never learns PSI Starstorm, which is instead taught to Kumatora by Ionia.
In Brawl, Ness and Lucas use PSI Starstorm as their Final Smashes. While the Final Smash covers the majority of the stage, it is possible to dodge it. It is stated in both of their Final Smash trophies that their friends taught them this move to be used in Brawl. Despite the fact that in Mother 3 PSI Starstorm is unavoidable, it is a relatively easy attack to dodge.