context: In the early stages of the film, Grandpa Hugo was to have been revealed as the murderous Dr. Satan, who at the time was simply referred to as the mad doctor.
source: The legend of the mad doctor was to be a ploy by the Firefly family to lure victims in, though this idea was later scrapped.
reference_original: La leyenda del doctor loco iba a ser truco de la familia Firefly para atraer víctimas, aunque luego esta idea fue desechada.
reference_flipped: La leyenda de la doctora loca iba a ser truco de la familia Firefly para atraer víctimas, aunque luego esta idea fue desechada.