Percy Jackson and the Olympians: Legends

Hylla looks like an older version of her sister, Reyna, and was so similar in appearance to her that she could be mistaken for Reyna's twin with glossy, long black hair and black eyes. According to Hazel, she's athletic and lean, dressed in a sleek black leather jumpsuit with Queen Hippolyta's belt, a strange-looking accessory made of interlocking gold links, around her waist. The belt is also made to show that she is queen of the Amazons. After her confrontation with Percy, Frank, and Hazel, she wears her sister's ring. The most significant difference in appearance between Hylla and Reyna is the former's long white scar on her forehead, which she had received from a duel while on Blackbeard's pirate ship. The scar had faded during the last several years, to the point that anyone who didn’t know better might mistake it for a worry line.

Hylla is a strong and brave young woman. She loves and cares about her younger sister, Reyna. She wanted to protect Reyna, so they went to Circe's island hoping to keep her safe. She is also somewhat vengeful, and was still furious with Percy for destroying Circe's Spa, her past home, even after meeting him four years later.

Hylla Ramírez-Arellano is a Roman demigod daughter of Bellona and Julian Ramírez-Arellano, and the older sister of Reyna Avila Ramírez-Arellano. She used to be a secretary on Circe's island but after the spa was destroyed by Annabeth and Percy, she became the Queen of the Amazons.