Well since SS supposedly took place before MM, would that probably make the Happy Mask Sales guy a descendant of Rupin? Other then that I always thought of the Happy Mask as Miyomito's avatar in the game. I swear that guy seems to have a perpetual smile. (Not that I wouldn't either if I had accomplished all that he did.)It seems like his posture still hasn't been fixed from his time in Termina haha. Time to see a chiropractor. Nice catch!