Adagio Dazzle

Adagio Dazzle is a female siren and one of the main antagonists in My Little Pony Equestria Girls: Rainbow Rocks. She is the lead singer of her band the Dazzlings, rivaling the Rainbooms.

The Dazzlings, including Adagio Dazzle, Sonata Dusk, and Aria Blaze, appear in Rainbow Rocks as the main antagonists.

In the film, Adagio and the other Dazzlings are introduced in the human world. They are sirens from Equestria who were banished to the human world by Star Swirl the Bearded to prevent them from using their dark magic to conquer Equestria. They are first seen in a café causing tension between the patrons when they witness the Equestrian magic that brought Sunset Shimmer to her downfall in the first film. Some time later, the reformed Sunset gives a tour of the school to Adagio and the other Dazzlings and tries to be friendly, but she gets suspicious when Sonata randomly blurts out that they sing to "get people to do what [they] want" and Adagio gets defensive over her pendant. Soon after, they convince all of the students except the Rainbooms and Sunset with their music to turn the friendly Musical Showcase into an all-out Battle of the Bands.

Adagio and the Dazzlings use their siren's songs to control student opinion and advance through the competition bracket. When the only bands between them and first place are the Rainbooms and Trixie and the Illusions, Adagio manipulates Trixie into removing the Rainbooms from the competition entirely. In the final battle against the Rainbooms, Adagio and the Dazzlings are eventually defeated, and the gem pendants with which they controlled the students are destroyed. As a result, their inability to sing leads to them being chased off in disgrace.

Aside from flashbacks, Adagio's true form is never physically shown in the film, but she and her fellow band members gain pony-like ears, extended ponytails, and translucent fin-like wings. They also summon astral projections of their true siren forms from their pendants.

A drawing of Adagio's siren form is briefly seen in Friendship Games during the CHS Rally Song, with purple fins. Her siren form is in one of the human Twilight Sparkle's photos.

Adagio's siren form appears as a mascot costume in Equestria Land.

Adagio Dazzle, alongside Aria Blaze and Sonata Dusk, make their return in the music video Find the Magic, performing at the Starswirled Music Festival and singing about adjusting to life without their magic.

Adagio and the rest of the Dazzlings return in Sunset's Backstage Pass as performers for the Starswirled Music Festival singing Find the Magic, and as suspects to who has been causing the time loop. When Sunset Shimmer checks their van only to not find the Time Twirler and after reading Adagio's mind, Sunset finds out that they weren't responsible. Adagio says that they paid the price after manipulating Canterlot High and that they get do-overs every single day called "living life", and they continue to harass Sunset before she accidentally hurts Pinkie Pie's feelings, telling Sunset that she needs to change, and finally driving off.

Adagio is mentioned by Pinkie Pie at the start of the "Saving Pinkie's Pie" short.

In the Legacy of Chris Thorndyke,

And she is reprised by Kazumi Evans in the English dub and Yu Shinamura in the Japanese dub.