Johnson Explains the Sisters Grimm were once beautiful women on earth until they came to an untimley demise. Flemming, like most demons, loving attractive girls took a sense of pity on their unjust death and made them the dealers of justice in the land of the dead being the only beings able to kill both mortals and demons.

What he did not do was allow them to keep their beautiful visage and tehy eventually began to rot away like the other demons to become what they are now.

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