Bethor is a character from the anime and mobile game Operation Han-Gyaku-Sei Million Arthur, where she serves as a支援妖精, or support fairy, for the character known as Wandering Arthur. Her specific function is managing currency, which is her designated area of responsibility. She is a female character with a distinctive appearance, featuring purple hair that reaches hip length and blue eyes.

Bethor possesses a very high level of intelligence and considerable talent, which directly influences her personality. She is known for speaking in a harsh,严苛 manner that can resemble a sadistic or dominant personality, often coming across as a strict critic. Despite this formidable exterior, her personality has an unexpected dimension as she is emotionally fragile and sensitive beneath the surface. This contrast between her sharp tongue and inner vulnerability is a core aspect of her character. She is a diligent and serious individual who does not hesitate to reprimand those she finds to be lazy or reckless.

Her primary motivation stems from her deep concern for her partner, Wandering Arthur. Her master is largely apathetic and shows little interest in his own future or the state of the world around him. This lack of direction worries Bethor, and she takes it upon herself to watch over him and push him forward. Her harsh treatment and constant nagging are her unique way of expressing this care, as she tries to provoke him into taking action and finding purpose.

In the story, Bethor acts as a crucial companion and guide to Wandering Arthur. Her role is not just administrative, as she actively participates in missions and provides strategic support. Her most significant relationship is undoubtedly with Wandering Arthur, also known as Rurou Arthur. Their dynamic is central to her development. Over the course of the narrative, the professional partnership evolves to include clear romantic tension. Bethor demonstrates a possessive and jealous streak, particularly toward Yamaneko Arthur, showing that her feelings for her master run deep. In a critical moment, after Wandering Arthur is shot while protecting her, Bethor's emotional response is powerful enough to revive him, cementing the deep bond between them. This event represents a key development in her character, moving her from a hidden caretaker to an open emotional pillar for her partner.

Regarding her abilities, Bethor is highly competent with numbers and financial management. In addition to her primary duty of managing currency, she is resourceful and can create complex plans, such as constructing a couple-themed disguise for a mission. She is also a capable player in high-stakes games like poker, using her intelligence to win against other skilled opponents.