Honestly, Pinkie Pie is one of the most motivating characters from anything ever for me. She grew up never having experienced happiness, and never even knew what a smile was. But once she finally did, her life changed forever. She left behind her birth name "Pinkamena Diane Pie" and pursued her new calling in life:
Bringing as much happiness as she can, to as many people she possibly can. That said, my eyes swell with tears during her Smile Song.
I love Pinkie! Pinkie Pie truly is amazing!
Also, humanized Trixie, because why not?