Apple Bloom appears in Equestria Girls for the first time with Sweetie Belle and Scootaloo when Twilight Sparkle is singing This Strange New World (song) next time she is seen is when she is in the library with Scootaloo and Sweetie Belle (humanized version of the CMC). Apple Bloom is seen in the Equestria Girls (Movie Song), as well as the song This is Our Big Night.
She is around the age of the younger ponies/humans, so she it is thought that she is a high school freshman in the movie. Even though she is in Elementary school in the show.
Human Apple Bloom wears her signature pink ribbon in her hair, a green shirt, jeans and orange galoshes. At the Fall Formal, she is wearing a sleeveless lace-trimmed lavender-coloured dress with a light violet ribbon around the waist. There is a flower in the middle of the ribbon, which might be a reference to her name (Apple Bloom.)
Apple Bloom and her fellow Crusaders appear in My Little Pony Equestria Girls: Rainbow Rocks.
They first appear in the gymnasium working on their poster for the upcoming Canterlot High School Musical Showcase. When the now-reformed Sunset Shimmer asks if she can help them, Apple Bloom politely declines the offer, still haunted by the Fall Formal events.
When the villainous trio, The Dazzlings, sing their song in the cafeteria to the students, Apple Bloom and her fellow Crusaders fall victim to it and believe that their band will win the Musical Showcase, now changed to a Battle of the Bands.
When the Battle begins, the Crusaders are show to be wearing human versions of their costumes from the My Little Pony Friendship is Magic episode, The Show Stoppers. During the Battle, they are eliminated, but are later freed from the Dazzlings' spell by Apple Bloom's big sister, Applejack and her band, The Rainbooms, when they destroy the ruby pendants giving the Dazzlings their power, leaving the now tone deaf girls to be chased of the stage in disgrace by the angry students and faculty.
During the credits, the Crusaders have forgiven Sunset for the Fall Formal events as Apple Bloom catches Sunset's journal when it falls out of her backpack, and all three of them join Sunset with walking down the hallway with smiles on all their faces.
In Rainbow Rocks, Apple Bloom is the only member of the Crusaders to speak in the entire movie.
Sweetie Belle and Scootaloo are Apple Bloom's best friends. All three are in the Cutie Mark Crusaders group.