Millianna is one of Erza's childhood friends from their days as slaves working at the Tower of Heaven, and she worked as one of Jellal's minions for a time. She is an avid cat lover, having decorated her entire room with a cat theme; her love of felines is to the point that she refuses to hurt anything that even resembles a cat, even if she knows that it is not a cat.

Millianna is one of the five team members representing Mermaid Heel in the Grand Magic games. Though she enters under a cape to hide her identity She is seen wishing Kagura good luck before her match with Yukino. After Yukino mentions betting their lives in their match, Millianna is a little worried about whether Kagura will be okay. Though when the fight starts, Kagura easily gets an advantage and she says that the moment Kagura draws her sword it would be cataclysm After the second day ends she decides to reveal herself to Erza and they immediately hug once seeing each other again after so long. Later they sit and have a chat. She mentions that Kagura is strong and how there is a chance that she may be stronger than Erza if she had gotten serious. She then reveals the reason behind the name of Kagura's sword and the real reason she decided to join Mermaid Heel. She says that like Kagura, she hates Jellal due to him making her a slave and that Jellal killed Simon, and therefore unforgivable

Millianna is noted for her cat-like appearance. She is an average tall woman who also has a curvaceous figure. She has cat-like ears, eyes, nose, and mouth, has brown hair tied into two ponytails and has whisker-like tattoos. She wears a yellow jacket with white stripes and black trimmings. She also wears a pink dress with a white bow tie on it and light-pinkish ruffles on the lower portion, a choker with a bell on it, and white leggings. Prior to times-skip Millianna's appearance seems to have change throughout the years. Her hair is arranged in a messy way. She still retained her cat-like appearance still wearing a choker with a bell attached unto it. Her attire consists of a hooded cape, long striped leggings, evening gloves, tight and small shorts with a belt and boots. She seems to have no upper attire revealing her bikini top uncovered. Millianna is a very cheerful, peppy person. She has a great love for cats and refuses to see them harmed in any way. She also tries to mimic a cat, from dressing up like one, to meowing. Millianna is close with the rest of her friends, and was very apologetic towards Erza after the events at the Tower of Heaven. (Source: