Mischievous Antichrist

What if, in another universe, let's call it universe 666, the Antichrist is a twelve-year-old boy? A boy without a shred of evil in him? A boy loved and adored by both angels and demons?
A twelve-year-old boy who, although the son of Lucifer, seems to have two goals in life: to have as much fun as possible and to get up to innocent mischief...