FASCINATION ABOUT TIEFLING ORIGIN

"The tiefling falls into a fantasy archetype -- the changeling, the trickster, the cursed hero/heroine -- that hadn't been represented in D&D's figures lineup to that time. Meanwhile, “The Planeswalker’s Handbook” expands on this rule having a randomizer desk that can provide DMs with other attributes that Tiefling might have, such as purple