The Eternity Devil's core is a lump of flesh in the shape of the number 8 which can also be seen as the infinity symbol with an eye and mouth on either side and two mouths in the center. Within its own stomach the Eternity Devil can manifest as an endless wave of flesh consisting of many arms and heads fused together. Eternity Devil finds amusement in the fear and suffering of others, openly laughing to panicked people. He is willing to make deals with humans in order to achieve his objectives.