PK Flash

thumb|right|200px|Lucas using PK Flash on Natural Killer Cyborg.
PK Flash (Japanese: PK Flash), known as PSI Flash in EarthBound, is a PSI ability in EarthBound and Mother 3. It targets all enemies and may cause them to suffer from crying, numbness, feeling strange or be instantly defeated. In EarthBound, PK Flash has four power levels that determine what effects it can have; in Mother 3, it only has one.
PSI Flash is learned by Ness in EarthBound and by Lucas in Mother 3. In the latter case, it is not learned by leveling up but rather granted in an event, like PK Love.
While potentially powerful, the ability's effect, and even whether it has an effect at all, is completely random. More potent effects have average chances of appearing even at the highest level, and for most enemies, the attack has a high chance to fail altogether, except for the select few who are "weak" to it.
Still, with a lucky break, it's possible to completely turn the tide of a battle, and even defeat some bosses (such as Ness's Nightmare in EarthBound and the King Statue in Mother 3) in one hit.
Monsters weak to Flash include underground creatures (such as worms and moles) and unholy spawns (like ghosts, mannequins and zombies).
PSI Flash serves as the successor move to both PK Beam and Darkness from EarthBound Beginnings.
== In EarthBound ==
Level	Users	PP Cost	Target 	Effect	Comments 	Description
α 	Ness 	8 	To all enemies	N/A 	Enemies suffer from crying or feeling strange. (Learned at level 18) 	It generates a strong flash and can make the enemy start crying uncontrollably (85%), and in some circumstances, feel strange (15%).
β 	Ness 	16 	To all enemies	N/A 	Enemies suffer from crying, numbness, feeling strange or they become unconscious. (Learned at level 38)	It generates a strong flash and can make the enemy start crying uncontrollably (60%), and in some circumstances, can make the enemy feel strange (10%), become numb (10%), or even be destroyed (15%).
γ 	Ness 	24 	To all enemies	N/A 	Enemies suffer from crying, numbness, feeling strange or they become unconscious. (Learned at level 61)	It generates a strong flash and can make the enemy start crying uncontrollably (45%). Often, it will make the enemy feel strange (15%), become numb (20%), or destroy it in a single strike (20%).
Ω 	Ness
Giygas	32 	To all enemies	N/A 	Enemies suffer from crying, numbness, feeling strange or they become unconscious. (Learned at level 67)	It generates glorious rays that have a high probability of destroying most of the enemies on the scene in a single strike (40%). It still has a chance to make the enemies cry (35%), feel strange (10%), or become numb (15%).
==In Mother 3==
Users	PP Cost	Target 	Effect 	Description
Lucas	12 	To all enemies	Status Effect: Various	Causes all enemies to cry. Can also cause strangeness, paralysis, and instant defeat.
Category: EarthBound
Category: Mother 3
Category: Offense PSI
Category: PSI