Pumpkin Head (ハーロン Hāron?) is the boss of the Spirit's Grave, the first dungeon in The Legend of Zelda: Oracle of Ages. It appears to be a tall apparition with a jack-o'-lantern for a head; however, this is only a body used to house a smaller spirit.
In the first part of the battle, Link must attack Pumpkin Head's body until it disappears. Once it does, he must equip the Power Bracelet and lift its head, which will make the spirit inside appear. He must then either strike the spirit with the sword or throw the pumpkin at it to damage it, prompting it to go back inside. If these steps are repeated, Pumpkin Head will eventually be defeated, and Link can retrieve the Eternal Spirit.