Yammy is portrayed as arrogant and confident in his abilities. He is also quite brutal. Yammy has a habit of shouting "que suerte" when he comes across opponents that will amuse him. The biggest but not the brightest of the Espada, Yammy relies greatly on Ulquiorra to carry out instructions for him and orders for him, and acts as his enforcer. Rather than using tactics in the battlefield, Yammy prefers just to fight with his brute strength and seems to take joy in killing and slaughtering. Yammy is always resting his energy and eating souls in order to fulfill his need to destroy.