Who is the narrator, can she or he read minds, and, more importantly, can we trust her or him?
Third Person (Limited Omniscient)
Revolver is told in a third person limited omniscient narrative voice. Yeah, that's a ridiculously long name, isn't it? Thankfully the idea behind this all is pretty simple. Basically, third person limited omniscient narration means the story is told by an outside narrator who tells us the actions, thoughts, and feelings of just a select few characters. In Revolver's case, that character turns out to be Sig—fifty years later. Let's break it down with an example though, shall we? Check this out:
Sig spent all morning pounding the blade of the shovel through the snow to the icy ground beneath. […] Angrily he threw the handle of the shovel away behind the dog huts. He picked up the blade to follow it, then felt the anger drop from him, and with it let the blade fall in the snow by his feet. (7.4)
Notice how we get Sig's actions (pounding with the shovel) and feelings (anger). However, Sig isn't giving us the information himself in the moment (if he was, it would read I pounded and got angry). Instead, someone else—i.e. an unknown narrator—tells us what's going on with Sig out in the snow.
This allows us to keep a healthy distance, which helps us see Sig for who he really is. And yet it also enables us to get close enough to him that we can't help but root for him, since we get to hear what he's thinking half the time. It's not until much later that we figure out the narrator is actually Sig from the future, writing the book in 1967 when it actually takes place in 1910. When we do put this together, though, we understand why we're limited to only Sig's thoughts—it's not like he knows what Wolff or his dad were thinking at the time.
In short, Sig's our man in this book, through and through.