It will come to light that baby Beelzebub has siblings, possibly also in contracts. Beelzebub will be the youngest and the only boy. * The reason why Beelzebub is the next in line to the throne is due to the Heir Club for Men being in effect. * Confirmed, we now know he has at least one older brother, En. * And apparently both are being tested to see who deserves the throne.