PSI Rockin

PSI Rockin (Japanese: PKキアイ PK Fighting Spirit), also referred to PK Rockin is Ness's signature PSI attack, only appearing in EarthBound. It does a large amount of damage to all enemies, with the power varying between ranks. Ness's Nightmare and Giygas (when inside the Devil's Machine) also know this attack.

The attack's name is determined by what is chosen as the player's "favorite thing" at the beginning of the game.

Overview
When Ness uses PSI Rockin, psychedelic lights and sounds are displayed dealing high damage to all enemies, while also having the possibility of decreasing one of the targets' PSI Shield's strength by 1. PSI Rockin Ω is one of the most powerful PSI attack in the game, dealing up to 960 damage to a target, only rivaled by PK Starstorm Ω and PK Freeze Ω. Because PSI Rockin is not part of any element there is no Pendant that can protect against it.

PSI Rockin can be seen as the successor to PK Beam from EarthBound Beginnings as they are both non-elemental PSI attacks, with the only exceptions being it is multi-targeting instead of single target (sans PK Beam Ω) and it is Ness's exclusive move.

In EarthBound







 * }
 * Rockin' has a chance to miss its target, based on the following calculation: (((2 * target's speed) - Ness's speed) / 5).

PSI Rockin α

 * Giygas
 * Ness's Nightmare

PSI Rockin β

 * Giygas

PSI Rockin Ω

 * Ness's Nightmare

Trivia

 * PSI Rockin is one of the only offensive PSI attacks that can miss (excluding PK Flash).
 * Based on damage output and PP cost, PSI Rockin β is the most PP cost efficient with ~6.4 minimum damage per 1 PP, and ~19.3 maximum damage per 1 PP. By contrast, PSI Rockin Ω is the least PP cost efficient with ~3.3 minimum damage per 1 PP and ~9.8 maximum damage per 1 PP.
 * PSI Rockin α and γ are tied for the middle with 4 minimum damage per 1 PP, and 12 maximum damage per 1 PP.