Antero Vipunen is a giant who appears in Finnish mythology and Kalevala folk poetry.
Story
Antero Vipunen is buried underground and possesses some very valuable ancient incantations.
The god-hero Väinämöinen has an incantation with three words or luotes missing. In order to get them, he goes to wake up the sleeping Vipunen by putting stakes into his grave or through his mouth to his stomach. Väinämöinen hits Vipunen in the stomach so hard that he gives up, and hands over the words to get rid of stomach-ache.