Princess Piggles

Princess Piggles (プリンセスぶー子, Princess Buuko) is an in-universe animated character featured in the Danganronpa series. She is from the anime Demon Angel☆Pretty Pudgy Princess (外道天使☆もちもちプリンセスぶー子, Heretic Angel ☆ Mochi Mochi Princess Buuko).

Appearance
Princess Piggles is a short overweight magical girl with pink hair and blue eyes who resembles a. She wears a two-piece pink outfit consisting of a lacy crop top, pink skirt, and pink boots all with a heart motif. She carries a bow and arrow with a heart-shaped tip, and has a set of small, white wings.

Demon Angel☆Pretty Pudgy Princess
Not much is known about her in-universe anime series Demon Angel☆Pretty Pudgy Princess, but Hifumi Yamada mentions it's something in the magical girl anime genre, and that it's pre-production name was "Damage Angel". Based on the kind of merchandise it has, it seems to be aimed at a younger female audience.

Danganronpa: Trigger Happy Havoc
Demon Angel☆Pretty Pudgy Princess is Hifumi Yamada's favorite anime, and it inspired him to become a fanfic/doujin creator. Hifumi is extremely passionate about Princess Piggles, and collects a lot of her merchandise, much of which is visible inside Hifumi's Dorm Room. 2 pieces of Princess Piggles merchandise were key pieces of evidence during the Chapter 3 trial.

Hifumi's Dorm Room
Hifumi's Dorm Room contains the most pieces of Princess Piggles merchandise seen in the game. In his room, a Princess Piggles themed bedding, cosplay outfit, figurine, glasses case, pillow and cardboard standee are visible.

Danganronpa 2: Goodbye Despair
Additionally, in the minigame Magical Girl Miracle ★ Monomi, one of the collectible armor items called "Copyrighted Diaper" (版権モノのオムツ) has the item description: "This diaper is printed with the main character from the anime, "Pretty Pudgy Princess"."

Danganronpa Another Episode: Ultra Despair Girls
A Princess Piggles alarm clock is on the bedside table of Komaru Naegi's apartment during the prologue.

Danganronpa 3: The End of Hope's Peak Academy
Princess Piggles appeared as a playable character in a like game.

Super Danganronpa 2.5: Nagito Komaeda and the Destroyer of the World
Princess Piggles made a cameo appearance in Super Danganronpa 2.5 where she was shown with a family and Miaya Gekkogahara.

Danganronpa: Monokuma no Gyakushū
Princess Piggles appears as a power-up in the game. Princess Piggless is the rarest item to find in the minigame where she will appear flying on the screen and you must shoot at her to receive the power. When the players shoot as Princess Pigless you will upgrade your baseballs into rockets for a short ammount of time.

Trivia

 * A tweet by Kazutaka Kodaka reveals that the brainwashing Hope Video made by Ryota Mitarai uses an image of Princess Piggles in a kaleidoscope fashion.
 * Buuko also appears as a power up in iOS/Android game Danganronpa: Monokuma no Gyakushū.