I'll have to re-read the books (for a fourth or fifth time,) but it's interesting to me that so many casts of Marcone are older guys. I always thought he was near Harry's age. It said he was a young thug when the little girl got caught in the crossfire, right? And she's basically an adolescent when we see her in Death Masks, so he can't be that old, certainly not past middle age. I know I cast him a little young (though I do age the actor up a few years in my head) but he's certainly not in his fifties or sixties. Is he?
That's one of those 'who the heck knows' issues. Seriously, at the risk of being critical, it really isn't well-described. I keep picturing him in his 40's or 50's, but he couldn't have been a young punk less than a decade ago if he were. But if he were Harry's age, I do not believe he could have taken control and done so as effectively as he has. Someone like Torelli would never follow or obey someone he viewed as substantively younger, even in the very.. um... poor way Torelli has, given that he's always plotting to take over the organization.
Someone mentioned Sean Maher as Marcone, and in a way he has the right look, but he's too slight, in my opinion.
Yes, James Marsters isn't a natural blonde, but that hair colour wasn't natural -anything-. He might be an interesting Marcone, now that I think of it.