The Dazzlings

The Dazzlings are a group of Equestrian females consisting of lead singer Adagio Dazzle and her bandmates Aria Blaze and Sonata Dusk.

Role in the film
In My Little Pony Equestria Girls: Rainbow Rocks, the Dazzlings first appear in a café in the human world where thet are revealed to have been banished from Equestria for reasons yet to be revealed. They soon witness the energy blast that brought Sunset Shimmer down in the first film. They're amazed to see Equestrian magic in the human world and seek to find more magic to make everyone in the human world adore them.

As Twilight learns through research, the Dazzlings were sirens from Equestria who used their music to cause disharmony and were banished to the human world by Star Swirl the Bearded.

They perform at least two songs: Battle of the Bands and Under Our Spell.

More coming soon...

Role in the series
The Dazzlings do not have a role in the series as of now, but it is possible they will.