[Sewer Bull]

Originally Posted by Cerpin Taxt

Actually, you're wrong on that. They pretty much give you everything except his name and why he was arrested and tested on in the first place. They also hint to the fact that he's physically deformed in a couple parts of the graphic novel (

Spoiler:

when he kills whats-her-face that expermented on him

and

Spoiler:

when they further detail on the experiments that whats-her-face did

).

Yes, but...

Spoiler:

I don't think his face was still deformed in 1997. When V is about to kill Delia, she asks him to show his face to her. And then she says his face is beautiful or something like that.
It's been deformed in times of resettlement camp for sure. Delia wrote in her diary that V's face was very ugly.

He just wears Guy Fawkes' mask to hide his true identity. And because Guy Fawkes character symbolizes anti-governmental anarchy.