Although all they are all mermaids, she is special in particular. she had the ability to traverse on land. That power comes with a price though, she can't stay away from water for long. Once she dehydrates her skin/scales, she's stuck on land without the ability to turn back. Which is what happened to her having to her after she was disowned her refusing marriage. She became a bit bitter and would take out some of her fustrations on her newly acquired traveling compantion, Orion. Eventually, he stabbed and said he didn't deserve to be treated like this. He was grateful for her saving him from drowning when they met, but there is no excuse for this behavior. After realizing she had done all that she started to feel extremely guilty and offered to seperate ways from him, but he accepted her apology as long as she watched what she said a bit more carefully.

Their travels came to a pause once entering the Phoenix Kingdom. Orion had his his weapon design was recognized and by Princess Airie. The one who brought the ideas for collapsible weapons. Along with elemental absorbtion. Both of them ended up under investigation. That's when they foundo out someone stole Airie na her father's ideas and used them without their knowlege. After realizing that they had nothing to do with it, Orion had his weapon remaade by the respected inventor. Soon after Sierra had artifical fins made by Airie. The other princess inistetd. Telling her she didn't deserve being kicked out and she should still be able to swim around like she did before. She also became trained in the use of a trident.