This is a Pure Good proposal of Pinkie Pie from My Little Pony: Equestria Girls.
Who is she?
Pinkie Pie's human counterpart is one of main protagonists of My Little Pony: Equestria Girls. She is a student at Canterlot High and a drummer for Rainbooms.
What she has done?
In My Little Pony: Equestria Girls, she first appeared as the head of party planning committee at Canterlot High School. She and her friends are driven apart by Sunset's machinations. Thanks to Twilight, they reconcile and helped Twilight voted as Princess of Fall Formal. After Sunset wears a crown and turned into "raging she-demon", Pinkie and her friends defeated her by using Elements of Harmony.
In My Little Pony Equestria Girls: Rainbow Rocks, she first appeared helping her friends making posters for CHS Musical Showcase. During the Rainbooms' rehearsal, she and her friends sympathizes with Sunset for her bad memories of Fall Formal. She later hosts a slumber party at her house that her friends attended. Throughout the movie, she argued with her friends whose fault it is. After Sunset patch things up, they later reconciles.
In My Little Pony Equestria Girls: Friendship Games, she competing in games against Crystal Prep's Shadowbolts as part of Canterlot High's Wondercolts. She participates in Academic Decathlon, winning a baking contest by creating a replica of Mona Lisa inside a cake. She is paired up with Rarity during the speedskating portion of the Tri-Cross Relay, beating Sunny Flare and Lemon Zest. Pinkie is the first friend to realize that the Twilight she just met during the Friendship Games is from the human world, not from Equestria. She helps break the ice between Canterlot High and Crystal Prep by livening up the school's tense welcome party. Her joy at seeing the two school rivals' mingling causing her to pony up, but her magic was drained by Twilight's magic-detecting device. She later regains her magic to empower Sunset and turn Twilight back to normal after she turned into Midnight Sparkle.
In My Little Pony Equestria Girls: Legend of Everfree, Pinkie goes with her friends and classmates to Camp Everfree, where she expresses her desire to engorge herself on marshmallow. At Camp Everfree, she paired up with Rarity in Emerald Tent. Pinkie's magic undergoes her dramatic change, and she develops an ability to make sugary objects explodes with her physical touch. Throughout the film, Pinkie helps her fellow Wondercolts build a new dock for Camp Everfree as a part of their "gift for future campers". When camp director Gloriosa Daisy consumed by Equestrian magic and Twilight Sparkle overcomes her fear of Midnight Sparkle, Pinkie and her friends defeat her. In order to save Camp Everfree from closing, they organizing a Crystal Ball fundraiser.
Unlike her pony counterpart, the human counterpart of Pinkie is more maturely comedic, but still good-hearted despite her mentally ill persona. She loves to spreading joy to others as she throws a party at aloof Crystal Prep students and has desire to make others happy drives her to establish a glee club. Pinkie also demonstrates an advance level on intuition when she quickly figures out what her costumers needs based on their orders. Here is her heroic deeds.
- Defeating Sunset Shimmer along with her friends via Elements of Harmony.
- Defeating the Dazzlings along with her friends in Battle of the Bands.
- Helping Applejack get her bass guitar back from Flim Flam Brothers.
- Helping break the ice between Canterlot High and Crystal Prep by livening up the school's tense welcoming party.
- Redeeming Twilight by turning her back to normal after she turned into Midnight Sparkle along with her friends.
- Defeating Gloriosa Daisy by turning her back to normal alongside her friends.
- Revealing the mastermind behind the theft of the props from Daring Do movie set alongside her friends.
- Helping Twilight gets Rosette Nebula's attention.
- Defeating Wallflower Blush by destroying the Memory Stone alongside her friends.
- Defeating Vignette Valencia by destroying her enchanted phone alongside her friends.
- Saving the passengers from the sinking ship.
- Defeating PostCrush by destroying Time Twirler alongside Sunset Shimmer.
Whenever she argues with her friends over a slight of mistake, it doesn't make it her corrupting factor.
In My Little Pony: Equestria Girls Holiday Special, she and her friends temporarily betrayed Sunset as they suspecting her as "Anon-a-miss". However after Sunset reveals who is behind this, they later reconcile with her and became friends again.
In My Little Pony Equestria Girls: Forgotten Friendship, she and her friends turned hostile towards Sunset after Wallflower removed their good memories of Sunset. After Wallflower revealing her true nihilistic nature to Sunset, she and her friends finally realized their mistakes. Because of this, she and her friends later accepts Sunset as their friend before they defeat her by destroying the Memory Stone.
In My Little Pony Equestria Girls: Sunset's Backstage Pass, her annoying behavior causes her and Sunset to be accidentally get themselves banned from the festival as she was distracted by other activities. Later after Sunset realizes her error of ways, she and Pinkie later makes up.
Overall, she has 0% of corrupting factors.