Usually a secondary mafia has 3-4 players, not just two. The fact they're purple shows me they aren't the primary mafia which is usually in red. If there were just two of them then they'd be SK partners. I don't know the theme though, as you know, so if you think they're done based on their characters then that's great.
LC, I'm pretty sure he's scum based on his play and screwing up his claim. Hammer him.