Sour Sweet is a female human and one of the Crystal Prep Academy Shadowbolts in My Little Pony Equestria Girls: Friendship Games.
True to her name, Sour Sweet has a bipolar personality where she alternates between being sarcastic and rude and obnoxiously nice. She acts mean towards Twilight throughout Friendship Games, irritated by her thoughtless and clumsy behavior, which she believes will cost her team's victory in the games. Much like the rest of her school, Sour Sweet is highly competitive and confident in her athletic skill, and she is willing to use peer pressure against Twilight to manipulate her into using magic for Crystal Prep's benefit. After this ends up endangering both schools, Sour Sweet becomes remorseful and helps rescue her classmates alongside Canterlot High students.
- Sour Sweet made her first appearance in The Rainboom's Adventures of Thomas and The Magic Railroad.
- Sour Sweet will guest star in Doctor Aaron's Adventures of I, Robot.