Twilight Sparkle is the main protagonist on My Little Pony: Friendship is Magic and a recurring character in the Something Sweet to Bite saga, as well as the main protagonist in the first one. She is one the ponies indirectly responsible for the resurrection of The Candy Mare and the spread of the Candy Ghoul virus.
As a pony, Apple Bloom was a light yellow filly with orange eyes and red hair. She also wore a pink bow in her hair.
As a candy ghoul she took on a more melty appearance and was covered in caramel.
Resurrecting the Candy Mare Edit
About a week before Nightmare Night, while helping Pinkie Pie decorate the post office in Ponyville for Nightmare Night, she talks to her friends Sweetie Belle and Scootaloo, about how much candy their going to collect on Nightmare Night and how much they'll leave for Nightmare Moon. This prompts the attention of Diamond Tiara and Silver Spoon, who berate them for leaving their candy, stating that they didn't leave any last year. This enrages Apple Bloom and her friends she then states that they aren't going to leave any candy either this year and then makes a bet with them on who can make more candy this year. Pinkie then intervenes and try to convince them not to go with this, but Apple Bloom doesn't listen.
Later that day when the group goes to decorate the library, she accidentally knock over a bookshelf, after getting into an argument with Diamond Tiara, gaining the attention of Twilight Sparkle. After Pinkie explained what they were arguing about to Twilight, she then finds out how they aren't gonna leave candy this for Nightmare Moon this year. Twilght then explains that leaving candy for Nightmare Moon is a tradition and that it shouldn't be broken, but then after hearing from Diamond that they didn't leave any candy last year either, she realizes that they're is no consequences to not leaving candy for Nightmare Moon. Pinkie then shows them a book called "Ye Olde Tricks and Treats" a book containing several Nightmare Night stories to which she and Twilight start fighting over causing the book to rip in half and have several pages to fall out, a few of which were taken by Sweetie Belle.