Dhampir;19896 said:
Nero will most likly end up being consumed by a lust for power. Kyrie could be what helps him maintain himself, or perhaps her death could push him over the edge (Nero lacking the power to save her). For most humans the more power they have the more corrupted they become.
You know, I actually think that was why Virgel whent power hungry to begin with. I imagine he tried to protect his mother from Mundus but wasn't powerful enough. ("Foolishness, Dante, Foolishness. Might controls everything. And without strength you can't protect anything. Let alone yourself.")
So Virgel got very sullen and angry, while Dante tried to hide his pain by making fun of everything and adopting a cocky additude.
And this theory also makes sense in the fact that Trish was a copy of Sparda's wife. So why couldn't a copy of Virgel be made?
Also, I just have a hunch that the Frozen Castle is actually where Dante and Virgel where raised as kids.