Sockop

Sockops are enemies from Mario & Luigi: Bowser's Inside Story that are located in Dimble Wood. If Mario or Luigi jump into them, they will lose HP and possibly will get poisoned. They will have to press the A or B button repeatedly in order to escape. They attack by trying to ram into Mario and/or Luigi, but most frequently only do one of them. If they have honey coming out of them when they are preparing to attack, they will attack one of the Bros. and then run out of the screen and attack the other one from behind.

Later in the game, Mario got kidnapped by Sockops and Luigi must save him from them and will get stuck in a Sockop. While Luigi is stuck in the Sockop, he can talk to them and will not be able to fight them. He can walk across the bramble patches while inside of the Sockop without hurting himself. There is a Sockop called Giant Sockop in the game where he shrinks down in size after it is defeated.

Trivia

 * It is revealed that one of the Sockops are called Kuribo which may be a reference to Kuribo's Shoe from Super Mario Bros. 3.
 * They are even similar to Kuribo's Shoe.
 * Sockop are one of the non-boss characters able to talk.