PK Thunder

PK Thunder is an attack of Ness from Super Smash Bros. and Super Smash Bros. Melee. It is his Up B move in both of the games, and is a guidance attack, as well as a recovery attack. Once executed, Ness will shoot out a blast of electricity, which he will then guide across the field. Best used when far away, it can be used to hit foes from a distance, without the risk of getting attacked. Although it lasts long, it does have an extent to how far it can go. As for the recovery side, it can be used to hit Ness, at launch him really high up into the air, allowing him to get back to the field (if he jumps high enough). Luckily, the attack will not harm Ness, but he doesn't jump as high in Melee.

Lucas is also capable of using this attack in Super Smash Bros. Brawl. However, nothing about Lucas's PK Thunder is different, except for graphical improvement.

In the game Earthbound, Ness could never use PK Thunder, nor could he use PK Fire. Only his companion, Paula could use it, but it is likely he learned the two from her later on.