Ron Perlman and Emilio Rivera have also worked together on Sons of Anarchy
Ron Perlman, Jacob Vargas, Emilio Rivera and Bob McCracken all worked on Kurt Sutters Sons of Anarchy.
Julian Morris was born in London and naturally has an English accent. His character, Reverend Paul Curtis, is supposed to have an American/southern drawl, but his English accent is noticeable at certain points throughout the series. One instance is Episode 8 at around the 27 minute mark.
Not quite the Hand of God but Ron Perlman played Hellboy whose stone right hand was called the 'Right hand of doom'.
In Seaon 1, episode 1, at time 00:57:20 until 00:57:43, you will hear music like the main title of the movie "The name of the Rose, (1986)". In this movie the main character Ron Perlman does also play an important role as Salvatore.