Ferna, also known as Frani Markham, is a character from the anime and light novel series Skeleton Knight in Another World. She is a young woman who works as a chambermaid in the service of the feudal lord of the territory of Lamburt. Ferna has black or brunette hair that she typically wears in a chignon, secured with a hairpin, and she has large black or brown eyes. Her standard attire is the maid uniform of the castle where she is employed.

In terms of personality, Ferna is distinguished by her kind and gentle nature. Her character is also defined by a notable inner strength and moral courage, as she is willing to oppose the feudal lord she serves. This is considered unusual for commoners in her world, who rarely dare to rise up against the nobility, yet Ferna shows herself ready to do so for the sake of what she believes is right.

Ferna's primary role in the story is as a supporting character caught in the machinations of the nobility and criminal elements. Her background reveals that she was working in the household of Londes du Lamburt during a violent conflict between the feudal lord and his son, Petros du Lamburt. The conflict arose because Petros opposed his father’s decision to hold an elf captive. During this turmoil, Ferna befriended the imprisoned elf and took steps to keep her safe. Following Petros's victory in seizing control of Lamburt from his father, Ferna vanished from the territory. Her disappearance prompted the protagonists, Arc and Ariane, to investigate at the request of the nobles. The investigation revealed that Ferna had been taken aboard a ship belonging to Count Ornaut of the Nohzan Kingdom. Her capture and sale into slavery were orchestrated by a man named Gio Clintos, who took action against Ferna after she inadvertently stumbled upon his collusion with slave traders.

Key relationships in Ferna's story include her bond with the captive elf she protected, which demonstrates her compassion and willingness to defy authority to aid someone in need. She also has a significant connection to the protagonists Arc and Ariane, as her disappearance becomes a mission for them to resolve. Ferna herself does not possess combat abilities or magical powers; her notable skills are those of a trained maid, proficient in domestic service. Within the context of the slave trade, these skills made her a valuable commodity to the slavers who captured her. Her development is primarily centered on her transition from a seemingly ordinary servant to a victim of circumstance, whose bravery in befriending an elf ultimately led to her peril, thus serving as a catalyst for the main characters' actions against the corruption of the nobility and slave traders.