PK Flash OHKOs an enemy.

A One-Hit Knockout is a condition in all three games in the Mother series. This condition, unlike Mortal damage, instantly renders a party member unconscious. The only methods of doing this are certain PSI moves. Enemies like Ness's Nightmare can give this condition by emitting a glorious light, which functions as PSI Flash Ω. Ana has the power to do so by using PK Beam γ and PK Fire Ω, Ness can do this by using PSI Flash β or higher, Lucas can use PK Flash against enemies to instantly defeat them, and the Masked Man is able to instantly knock out all of Lucas's party members (save for Lucas himself, as he has the Franklin Badge) with his lightning, possibly a stronger version of PK Thunder.