There are a few attacks in the Super Smash Bros. series that are PK-type (Known as PSI type in Ultimate). They are strengthened by PK Attack stickers and Spirits with "PSI Attack ↑". PK attacks come from EarthBound. Since the concept of type does not exist in games before Super Smash Bros. Brawl, only characters' Brawl, Smash 4, and Ultimate movesets are included in this list. For example, while some of Ness's attacks in Smash 64 or Mewtwo's or Ness's attacks in Melee could be considered PK attacks, they are not coded as being so.
List of PK attacks
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