I’m sitting here rereading Visions of V again, and a lot of my headcanons prior to it being published are also established in canon.
Gonna put these all under a cut while I muse.
One of the headcanons and concepts I’ve always brought back was V’s hatred of Eva - he has a very strong hate for her. It’s not hate if you look past it - it’s bitterness that he was abandoned by Eva.
There was a heartbreaking section in VoV where Trish saves V, and it’s revealed that Vergil didn’t want to be the one saving his family with his power. No, what he truly wanted was his mother to save him - and when she never came, Vergil just assumes that he’s been abandoned.
I’ve written and referenced his fear of abandonment before, and it is multiplied by my divergence in which he co-exists with V - this fear drives my other headcanon that V leaves Red Grave once he returns to life, without telling anyone.
Another thing that I also write a lot about is V vs Vergil, and how they are both one person, yet two different existences, and it leads to V hating Vergil. I’ve always written V as a more open and “kinder” Vergil - a Vergil who would have embraced his humanity. But as a person, V is different from Vergil; he’s what I would call Vergil’s shadow, a facet of Vergil he never wanted to exist (please refer to the Jungian concept of Shadows, or for a contemporary example, the Shadows from Persona 4)
Griffon stresses in VoV that V is a dreg of Vergil - a cast off... and exactly plays into my headcanon of V being everything Vergil hated.