Pinkie Pie is a pony who was who adopted by a young girl named Molly and she's going to be Snowball's girlfriend. She also appears in the short film called "Snowball's New Friend". She is voiced by Andrea Libman.
When Molly got home, she brought in a new pony named Pinkie Pie who wants to be Snowball's girlfriend and licked his Snowball which makes Snowball disgusted. When they are about to sleep, Snowball knew Pinkie Pie was annoying and wants Pinkie Pie to leave. The next morning, Max told Snowball to friends with Pinkie Pie just like Max was friends with Duke.
In the end, Pinkie Pie had babies which are called "Punnies".