One of the supporting characters. Bio is quoted from https://www.mane6.com/characters/shanty/

It is well known among the creatures of Foenum that when a goat sets her eye on something, it’s only a matter of time before she gets it.

Shanty, named after a song with no title, was taken in by notorious pirate captain Bravura after being orphaned at a very young age. She studied the ways of salt and sail, instilled with the belief that the only ones who make it in life are those brave enough to fight to the last.

For Shanty to earn a place as a true member of her pirate crew, she has to prove her worth. And it isn’t enough to meet the bar, Shanty aims to blow it out of the water. That means stealing the most valuable treasure in the world: which just so happens to be the Prophet’s Key! Only one who’s worthy? It’s gonna be Shanty!

Quoted from the fan wiki:

As an aspiring pirate, Shanty values freedom, bravery, and looting. She's what can be described as a "meaner Arizona", as a result of being raised in a less heartwarming environment: she's more daring and reckless than the rest of the cast, and won't hesitate to threaten her opponent before getting down to brawling. Shanty will do anything to achieve her goal and prove herself to be the best pirate, even if it's not necessarily about saving the world.

Being a minor in a mostly unpaid fandub project, Shanty's VA will be paid an undetermined amount negotiated in private. The only material we have of Shanty's that we can dub is... a small handful of fan comics, honestly. It's kind of sad.

Do your best to sound just like Afi Ekulona! Here's a video to help: https://www.youtube.com/watch?v=vkfLRSzG1uw