Fern

• Fern is a young human mage, and she accompanies Frieren as her apprentice and party member. She is an orphaned war refugee originally from the Southern Lands, later adopted by Heiter and placed under Frieren's care after his death.
• Fern has a mature personality as a result of her upbringing, leading her to often act as the mother of the party. She constantly has to help Frieren perform ordinary tasks such as waking her up due to her being a deep sleeper, feeding her, and dressing her, along with cleaning up her messes. Despite her outward motherly nature, Fern is easily upset and can act childish when others don't cater to what she wants or offend her, and in extreme cases, pouting and completely ignoring them when they attempt to reconcile, though this can be resolved through actions like treating her with food and abiding by demands she makes. She also has a habit of following around and watching others when she is suspicious or curious about them instead of confronting them directly, as seen when she stalks Frieren after suspecting her of making poor financial decisions. Fern is also a very loyal apprentice and has the discipline to train incredibly hard since she was young so she can manage on her own, ultimately becoming a powerful mage acknowledged by Frieren. She rarely cracks under pressure and is able to keep a level head in combat despite receiving injuries and battling opponents that are more powerful or experienced than her. Her devotion to learning magic stems from the loss of her parents at an early age and her subsequent adoption by Heiter; after nearly committing suicide after her parents' death, she was stopped by the priest, who advised her to stay alive for the sake of keeping the good memories she had. As a result, she became extremely dedicated with the maturity to learn magic and prove to Heiter that he could pass peacefully without any regrets and without worrying about her. Fern clings to magic, as in a situation where she cannot rely on it, she feels as though she has been thrown into darkness.
• Fern is a young human with purple eyes and long, waist-length purple hair with bangs. She usually wears her hair down with two additional chest-length strands framing her face in a hime-style haircut and partially tied back. After turning eighteen, Fern grew to be taller than Frieren and with a more developed figure. As a result of her mature and calm personality, she frequently wears a stoic expression and rarely expresses strong emotions. Her facial features are characteristic of those from the Southern Lands. During her travels with Frieren, Fern is most commonly seen wearing a long, buttoned white dress with a Victorian top, including a frilled collar and puffy white sleeves, along with black boots. When outdoors, she also dons a long, black coat with a hood, which has a gray inside layer. For Fern's sixteenth birthday, Frieren gifted her a butterfly hair ornament, which Fern regularly wears on the back of her head to partially tie her hair back. Fern also frequently wears a mirrored-lotus bracelet on her left wrist, gifted to her by Stark for her eighteenth birthday.
• Ever since she was young, Fern displayed a talent for controlling her mana and limiting her presence. Fern is capable of overwhelming powerful mages, such as Ehre, while simply using basic spells, and according to Falsch, she is the youngest mage in history to pass the third-class mage exam with the highest score. Her talent is also recognized by Serie, who passes her during the First-Class Mage Exam and even states that under her tutelage, Fern could reach heights that no other mage has achieved. Fern is able to read ancient elvish.
• Mana concealment: Like Frieren, Fern is an expert at concealing her mana, a skill she has maintained ever since she was a child. As a result, she can often sneak up on individuals, including demons, without being detected. She was able to catch the powerful demon Lügner off guard, which surprised him greatly as the adept mana detection of his subordinate Linie would normally expose human mages. She was also able to approach Wirbel, a mage strong enough to become the captain of the Northern Magic Corps, without him sensing her until she was right next to him, and even Frieren herself claims to have trouble locating Fern when she is concealing her mana. She is arguably better at mana concealment than Frieren, given she can move while completely concealing her mana, whereas Frieren must stay still.
• Mana detection: Fern has shown to be more skilled at detecting mana than any other individual introduced so far. She was able to determine that Serie's mana was unstable, something that not even Lernen, the first ever first-class mage and an apprentice of Serie for over fifty years, was able to achieve. This feat was impressive enough for Serie to request Fern be her apprentice on the spot despite initially planning to fail her. Spellcasting speed: While she is inferior to Frieren in terms of techniques and mana, Fern's strength lies in her ability to rapidly cast spells. According to Frieren, battles end more quickly when Fern fights. When Fern fought against Lügner, she was able to overcome his attempts at outlasting her in a battle of attrition because she was able to cast multiple instances of Zoltraak simultaneously and in rapid succession to counter or even overwhelm his attacks.
• Offensive magic: Zoltraak: This is the only offensive spell Fern regularly uses. She has practiced it since she was young, so she can cast it very quickly and fire multiple blasts in rapid succession. She can also increase the density of the blasts while keeping their speed, something even a Greater Demon praised her for.
• Defensive magic: Like most modern mages, Fern can create hexagonal protective barriers. These can shield specific spots or completely surround her. She has used them to block multiple Zoltraak blasts from the spell’s original creator, Qual.
• Flight magic: This allows her to levitate and fly through the air. Fern estimates she can keep flying for at least half an hour on her own.
• Spell that lets you see through clothes: This spell lets the caster see through clothing, which is useful for spotting hidden weapons or items underneath.
• Spell to make things float: A telekinetic spell that lifts objects into the air. Fern mostly uses it for everyday tasks like clearing debris, but she can also pull her staff back to her hand during fights.
• Spell that captures a bird: A simple folk magic originally used by hunters. It traps any bird or bird-like creature within range. When cast, it produces a soft glow. The effective range is about 50 centimeters.
• Spell to make clothes clean and spotless: A legendary spell from the mythical era that Serie granted to Fern after she passed the First-Class Mage Exam. It instantly cleans any clothing, removes all stains, and leaves it with a pleasant floral scent.
• Spell that starts a fire: Fern uses this to create a small flame at her fingertip. She mostly uses it to light fires for cooking.

Frieren

• Before, Frieren was the Mage of the Hero Party, journeying with Hero Himmel, Warrior Eisen, and Priest Heiter for ten years to defeat the Demon King. As an Elf over a millennium old, she has a poor sense of time, often appearing aloof due to her inability to form quick connections. Despite her stoic and carefree nature, she can be emotionally sensitive, embarrassed by her mana detection flaw, and upset by comments about her age. She has long white hair, green eyes, and pointed ears, wearing a distinctive white and gold outfit with a red-staffed crescent tip. Frieren's abilities include immense mana output, mana concealment, and various powerful spells such as Zoltraak, Judradjim, and Vollzanbel. She carries a brown briefcase with magic items and personal belongings.

Stark

• Stark is a young human warrior who serves as the vanguard of Frieren's party. He has a casual, straightforward, and somewhat childish way of speaking. Friendly and kind-hearted by nature, he tends to be blunt in his comments. Despite years of training, Stark is cowardly when facing monsters; his hands often shake and he instinctively wants to run away. Even so, he forces himself to push through his fear when it matters. He occasionally teases Frieren by calling her "old," "old hag," or "old lady," which has earned him a strike system from her. Frieren keeps count and warns that she'll throw a tantrum if he reaches three strikes. He also bickers frequently with Fern, who constantly scolds him, though the two clearly care about each other and share a growing romantic tension.