Ness is the EarthBound character who uses a yo-yo as a weapon in Super Smash Bros.
Ness is the protagonist of EarthBound, Nintendo’s 1994 Super Nintendo role-playing game and the second entry in the Mother series. In EarthBound, he primarily fights with baseball bats, but Super Smash Bros. gives him a broader moveset inspired by the game’s weapons and psychic abilities. His yo-yo appears in several ground and aerial attacks.
Ness debuted as a playable fighter in the original Super Smash Bros. and has appeared in every subsequent mainline entry. His Smash moveset also includes PSI-based techniques such as PK Flash, PK Thunder, and PK Fire. PK Thunder can propel Ness through the air, making it both an attack and a recovery tool.
Lucas, another Mother-series fighter, is a common mix-up because he also uses PSI attacks and appears alongside Ness in later Smash games. Paula and Jeff are important EarthBound party members but are not playable fighters in the mainline Super Smash Bros. roster. Ness’s baseball bat and yo-yo are Smash representations rather than a claim that the yo-yo is his primary weapon in EarthBound.