Luda Lumbeck is a certified solo hunter from the world of treasure hunters. She first appears during the fifth year open recruitment drive of the clan known as First Steps, where she makes acquaintance with Krai Andrey, the clan master. She is a young woman of nineteen years old, a Hunter initially at Level 3 and later promoted to Level 4. Her specialty is that of a thief, focusing on infiltrating treasure vaults while minimizing direct combat. She is a solo hunter who achieved her level ranking on her own, a noteworthy accomplishment for someone with a relatively short career.

In terms of appearance, Luda has ponytailed hair and innocent eyes. She typically wears a thief outfit when working. Her personality is described as genuine, nice, and cool-headed. She does not discriminate against those who are new or weaker than her. Her motivations are not explicitly stated in the available material, but as a solo thief hunter, her primary drive appears to be successfully conquering treasure vaults while avoiding unnecessary danger.

Her role in the story is that of a supporting character who joins the First Steps clan. She is one of the hunters who interacts with Krai Andrey and the other core members. The nature of her key relationships is primarily professional, as she is a clan member and a fellow hunter. She has no known deep personal connections beyond her association with the clan. Her development is limited in the available information, but she does achieve a promotion from Level 3 to Level 4, indicating growth in her skills. Her notable abilities lie in her thief specialization: she avoids combat and focuses on skills related to lockpicking, traps, and navigation within treasure vaults. She is not a frontline fighter but an infiltrator.