yeah...um...i was confused about the whole sparda thing...and mundus killed em?...mundus ordered ppl to kill em?...either way...my theory goes that nero coulda been a baby when it happened and that could be the brother dante talks about in the first game who died...makes sense...cuz he doesn't say twin....dante didn't know that vergil died...he just knew he fell into hell....that could mean anything....nero could've been thought to have died as a baby when eva was killed...then...dante finds him when they're adults...makes sense as to why nero is an "orphan" after all