Derpy, also known as Muffins and Ditzy Doo, is a female Pegasus pony who was given the name Derpy Hooves by the show's internet following due to her cross-eyed "derpy" expression in the first episode.
Playstyle: Hoofsies (Footsies)
CPU Difficulty: Hard
Projectiles: 
+ A/B/C with at least 1 magic
Crouch Projectile: + D with at least 1 magic
Sky Projectile (M): + D
Muffins!: + D with at least 1 magic
Bless You: + C
Faceplant (M): + C
Bomb: + D with at least 3 magic
(M) - Can be performed in mid-air
Level 1 (Thundercloud Trot): + C
Level 2 (The Mug's Eyeful): 
(x2) + B + C
Level 3 (Mailman Madness): (x2) + C