Luca Brasi was a underutilized character in the movie but I've always been fascinated by that sort of mobster- a homicidal psychopath who scares other mobsters and is only controlled by the boss.

Who are some mobsters in real life that would have fit that criteria?

I think Sam DeStefano in Chicago came pretty close.


"When the snows fall and the white winds blow, the lone wolf dies but the pack survives."
Winter is Coming

Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die.
As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.