Flash Sentry is a character from the Equestria Girls movies. He is a guitarist at Canterlot High School in the human world who was Sunset Shimmer's ex-boyfriend who develops a crush on Twilight who enters their world. His pony counterpart is a guard at the Crystal Empire. As both a human and a pony, Flash Sentry is shown to be kind and gentlemanly, and shows signs of social awkwardness and clumsiness, such as walking into a door while escorting Twilight to the Fall Formal dance and backing into a wall while exiting the band room.While under the effect of the Dazzlings' magic, Flash becomes arrogant, cold, and spiteful. He is a yellow pony with blue styled mane and a cutie mark of a lightning. As a human, he has blown back blue hair, a white shirt with a blue lightning on it, black pants and sneakers. He is voiced by Vincent Tong.
In My Little Pony Equestria Girls, Flash Sentry first appears as a Pegasus royal guard in the Crystal Empire. He wears an additional back cloth and saddle plate normally worn by unicorn guards. Twilight Sparkle accidentally bumps into him when entering the throne room. He formally announces her arrival to the other princesses.
Flash Sentry's human counterpart first appears in Canterlot High School when Twilight runs into him in the corridor. He helps her up and asks, "Whoa. You okay?" Later, Twilight accidentally spills a beverage on him at the Sweet Shoppe, and he jokes they need to stop bumping into each other. Rarity reveals to Twilight that he is Sunset Shimmer's ex-boyfriend.
When Sunset Shimmer frames Twilight for ruining the Fall Formal decorations, Flash Sentry proves that the pictures are fake and Vice Principal Luna allows Twilight Sparkle to stay in the competition. Twilight is so thrilled that she hugs Flash Sentry. He asks Twilight out to the Formal, but mistakes her blubbering "no's" as her answer when she was really freaking out over the Formal being postponed. When the Formal reconvenes as originally scheduled, Twilight clears up the confusion with Flash Sentry and agrees to have one dance with him. The Formal is disrupted when Sunset Shimmer rises to power and summons an army of hypnotized students, including Flash Sentry. Twilight and her friends defeat Sunset Shimmer, turning everyone back to normal. Flash Sentry finally asks Twilight for their dance. On the dance floor, he imitates Twilight's odd dancing style, previously seen in Sweet and Elite
When Twilight returns to the Crystal Castle at the end of the film, she again bumps into Flash Sentry's pony counterpart. He helps her up and states that they need to stop meeting like that. When Twilight's friends say that she must have a crush on him, Twilight denies it, but blushes. Pinkie Pie accurately guesses that he must have reminded Twilight of a rock guitarist whom she met and liked in the human world.
In the second film, Flash Sentry compliments the Rainbooms on their playing and asks them if Twilight will return for the school's musical showcase. Soon after, Sunset Shimmer reveals to her friends that she only dated Flash for popularity purposes and never really liked him. He is later seen in the cafeteria during the Dazzlings' song. At one point, Sonata Dusk strums the strings of his guitar.
Like most of the Canterlot High School student body, Flash and his band fall victim to the Dazzlings' spell and becomes overly competitive. During the Battle of the Bands, he and his band, which is specified in the first film's screenplay novelization Equestria Girls: Through the Mirror to be named Flash Drive, is seen facing off with the eco-kids. He also shows hostility toward Twilight, causing her to cry.
When the Dazzlings' spell is broken, Flash congratulates Twilight and hugs her, but Trixie interrupts their affectionate moment.
In the My Little Pony Equestria Girls: Rainbow Rocks animated short Perfect Day for Fun, Flash Sentry appears at the Canterlot High carnival and watches the Rainbooms' concert.
In the musical short Friendship Through the Ages, Flash partially appears during Rainbow Dash's verse.
In the musical short Life is a Runway, Flash appears as a silhouette during the fashion runway sequence.
Flash Sentry appears again in the third film. In the trailer, he is sitting with Lyra Heartstrings in the background of a scene inside the gym, and later is in a group with other students standing under the Wondercolts logo.
In My Little Pony: Friendship is Magic, Flash Sentry has a brief non-speaking appearance as one of Princess Cadance's guards when she exits the train in Ponyville. He has a brief look at Twilight Sparkle, smiles, and gets back on board.
In a later episode, "Twilight's Kingdom Part 1", he is shown announcing the duke and duchess of Maretonia.
MCF Stories Edit
In the MCF stories, he debuts in "MCF: The New Sunset" where he is once again under a spell, this time Shirona Paulina and Adele copying the Dazzlings' spell. After the spell is removed, Twilight says that while she thinks he's cool, but prefer to be friends.
- MCF: The New Sunset(Debut)
- Before his official name was revealed, he was called "Brad."