Pestnuts are enemies found in the Chucklehuck Woods in Mario & Luigi: Superstar Saga and Mario & Luigi: Superstar Saga + Bowser's Minions. They may disguise themselves as a brown Chuckola Fruit. Elite Pestnuts appear in Oho Ocean Seabed.
Pestnuts have two attacks. The Pestnut may roll into one of the Mario Bros. from the front, which can only be countered with the use of a hammer. The Pestnut may also attack from behind, which can only be dodged by jumping. Unless Mario or Luigi are wearing one of the Shiny Killer Jump Badge the attacker will take damage. In the original Superstar Saga, jumping on Pestnuts to counter-attack will still damage the Bros. even if they are wearing one.
Pestnuts also appear in Mario & Luigi: Superstar Saga + Bowser's Minions in the Minion Quest: The Search for Bowser. Pestnuts fall under the classification of melee troopers, and attack (like they do in the regular game) by rolling into their opponents. Because of their spikes, if a Pestnut gets attacked from the side or above, the attacker will receive damage. Their special skill is Spin to Win. When used, they will roll into a minion three times. Pestnuts areweak against ranged minions, and are especially weak against Spear Guys.