Esty is first introduced in Atelier Rorona as the hard working Adventurer's Guild receptionist. She is a very kind and helpful person who aids Rorona in her journey by giving her requests which will boost her reputation with the city. She is friends with Sterk and seems to be quite loyal to the king. As the series progresses, Esty becomes increasingly unhappy about her loss of youth and lack of a husband. During the events of Atelier Totori, Filly has taken over Esty's job and now works as the receptionist. Filly explains that her older sister was concerned about getting too old to find a husband, and so she is supposedly out in search of a man and is not seen in the game. In Atelier Meruru, she has seemingly given up her search for a husband, and is focusing on her career. She seems somewhat resigned to having chosen a career over marriage, but is clearly unhappy about it. When she drinks, Esty often reminices about her age. She watches closely over her sister Filly and worries about her sister's lack of skill with people. When she learns about the Potion of Youth, she is very determined to have some. (Source: Atelier Wikia)
Calling no place home, Lionela travels the kingdom as a street performer, with her trusted friends Aranya and Horoholo, her puppets. Lionela is a somewhat ditzy girl, which gives her some common ground with Rorona, allowing them to become good friends. In addition, she is a very quiet and mysterious girl, and is quite prone to apologizing for everything. Lionela is a kind individual who is very grateful for the companionship Rorona provides. However, she closely guards a secret that she fears would turn her new friend away. (Source: Atelier Wikia)
Watching a show of Shiny Chariot as a child motivated her to enroll into a witch academy and it's still her biggest motivation that gets her through the boring theory lessons. She doesn't come from a wizard family and thus has some problems with flying a broom. She is in rivalry with Diana, a gifted witch, who looks down on her and her idol.
A Tower Witch targeting Takamiya. She specialize in using illusionary magic and has massive numbers of mechanical bunnies called "Hunters" who serves as her familiars. She, along with four of her fellow "Witches of the Tower," have transferred to Takamiya's school in order to get close and capture him at the same time—that is if she and her fellow witches can get pass Ayaka.
She is Tanpopo's colleague. She and four of her fellow "Witches of the Tower" form the 'Ivory Quintet," group of witches assigned to transfer to Takamiya's school with the task of capturing him—that is if they can deal with Ayaka first. She has the ability to pass through walls and create a defensive barrier. She wears a complete wolf pelt that has both head and tail around her neck that functions either as an extra appendage or as a back-up weapon. (Source: manga-reader)
The most powerful of the Tower Witches. She specializes in potions and explosive magic. She has a humanoid alligator named "Wani shinshi" who serves both as her familiar and enforcer. Apparently, she and Kazane knew each other for a very long time—since the crusade—which suggests that like Kazane, she is about a couple of hundred years old. (Source: Manga-reader, Anilinkz forum)