Meet Thunder Sea :)
 
She is part of a music group called the Stomettes, a group of ponies made up from territories taken over by the Storm King, who then impersonated popular singers go from Equestria in order to be used as propaganda and boost morale, so other lands think they are the real deal.
 
She is based of Songbird Serenade :)
 
The leader of the group, she has a very sassy and sly attitude, often enjoying messing around and teasing everyone to see how many buttons of theirs she can poke. A proud schemer too, as she often ends up scamming the other members if the army into giving her things without then knowing they are being played.
 
She is also very seductive, and has been known to get rather “personal” with others, male or female, if it works for her. Despite her attitude, she does care about the girls working for Her, and fears for their safety from the Storm King, as she is willing to take the fall for any mistakes they made.
 
After the fall of the Storm King, she decided to “borrow” some left over bits and other items that she sold, and then used the money to help set up her own Cabaret club in Canterlot. She serves as the owner of it, and also likes to take part in singing in there, sometimes with the rest of the Stormettes too.