PickyPiggy is an anthropomorphic pig with light-pink skin, black eyes, a curly tail, a half-moon shaped upper snout, and ears curling inward. Her hooves and snout, along with the inside of her ears, are a darker shade of pink. Similar to the other Smiling Critters, PickyPiggy is depicted with a wide toothless grin (the inner mouth shrouded in darkness), and she possess a black zipper line running down her center, with the zipper sporting a red apple pendant. PickyPiggy's cartoon appearance is roughly the same as her toy appearance, albeit with the zipper line removed, the addition of white pupils, and the zipper pendant now attached to a black necklace. PickyPiggy is a healthy eater who loves food and encourages her friends to eat a well-balanced diet, though she also harbors a secret fondness for cheeseburgers and PBnJ sandwiches. Like the other Smiling Critters, PickyPiggy showcased an unnerving and maniacal personality when CatNap came to DogDay's house during their sleepover. She begged CatNap to use his Poppy Gas to overcome her fear-induced insomnia, saying: "We need it, CatNap!" When he complied, PickyPiggy showed signs of insanity, addiction, and mania when inhaling the sleeping agent, laughing hysterically with the others until she passed out.