By now you've heard of Pinkie Pie. You have heard appalling things. I tell you this - She was a friend... and she was a seeker of Happiness. Of Laughter. The experiments... They were all part of her search for those things. All for the Element of Laughter. The elements of good and evil, which are inherent in every personality.
She became a brilliant pony. But she became a monster.
Crossover of Jekyll and Hyde - now with original songs!
Slight AU tag for a change of the Mirror Pool legend