Some of Marilyn Manson's real-life tattoos had to be removed with makeup in order to put the Nazi emblems there instead.
Nero (played by Jimmy Smits) makes a comment that "I ain't no politician" and "Hey, maybe I *would* make a good politician." Smits played Congressman Matthew Santos in The West Wing (1999) & Senator Bail Organa in the Star Wars prequels (Star Wars: Episode II - Attack of the Clones (2002), Star Wars: Episode III - Revenge of the Sith (2005) & Rogue One: A Star Wars Story (2016)). And he played District Attorney Miguel Prado on Dexter.