Sketch of Pinkie Pie for 2008 MLP:FiM pitch bible. An early concept that Pinkie would randomly attack ponies with surprise parties. For whatever reason---- birthday, 1 month anniversary of last birthday, congrats on getting your mail, etc....
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Comments and interviews File:Lauren Faust season one retrospective - Equestria Daily QandA.pdf
Main category: Pinkie Pie images Friendship is Magic, part 1