PK Flash

PK Flash is a special attack that can be performed by Ness. It is a chargeable Neutral B attack. When the move is initiated, a ball of green light appears above Ness. As the B button is held, the ball of light moves downwards and increases in power, until the B button is released, or until it is fully charged, at which point it explodes radiantly. The light can be charged until it falls to the altitude from where Ness initiated the attack. PK Flash can be slightly moved horizontally by using the control stick. If the attack falls upon a platform or a higher level of a stage before it is detonated, it will disappear harmlessly. When performed in the air, it sends the user into a helpless falling animation. Fully charged, without the influence of special conditions, it deals a maximum damage of 39%.

PK (or PSI) Flash is one of Ness's unique moves in EarthBound. At its lower levels, it can only deal minor effects like crying and colds, but at the omega level, it is capable of delivering one-hit KOs to all enemies.