Pinkie Pie, full name Pinkamena Diane Pie, is a female Earth pony and one of the main characters of My Little Pony Friendship is Magic.
She is an energetic and sociable baker at Sugarcube Corner, where she lives on the second floor with her toothless pet alligator Gummy, and she represents the element of laughter.
Pinkie writes and performs many songs, and she is the source of many of the show's comical and cartoonish gags. She is called Ponka Po in some merchandise.

Pinkie Pie is first introduced as a talented and avid party-thrower.
She throws a party for Twilight Sparkle in Friendship is Magic, part 1, a welcome party for Gilda in Griffon the Brush Off,
and a birthday party for Gummy in Party of One (and even an "after-birthday party" the following day).
Pinkie is even shown to throw parties on completely random occasions, such as a "finish ringing the school bell" party in Castle Mane-ia.
In The Cutie Mark Chronicles, Pinkie says she got her cutie mark when she was inspired to throw her first party for her dour family.
In Party Pooped, Pinkie is revealed to have a secret party planning cave in the Sugarcube Corner basement.

Gummy is Pinkie Pie's toothless one-year-old pet alligator who is introduced in Feeling Pinkie Keen.
Pinkie Pie confides in Gummy many times about her feelings in Party of One, and she celebrates her birthday one day after Gummy's in the same episode.
She outright screams to Gummy how much she loves him in Just for Sidekicks and kisses him in The Lost Treasure of Griffonstone.

Pinkie Pie was raised on a rock farm with her parents and three sisters. Her family's coats and manes are Earth-colored, muted browns and grays.
When Rainbow Dash's sonic rainboom clears the clouds and paints a rainbow across the sky, the shock wave frizzles Pinkie Pie's hair, giving it its distinctive curl.
Subsequently, Pinkie Pie experiences magnificent joy and smiles.
She then decides to dedicate her life to making pony happy and throwing parties.
When she invites her family to their first party ever, her mother calls her Pinkamena Diane Pie.
Pinkie Pie now has a creepypasta named Pinkamena Diane Pie.