Melissa is a character from the light novel, manga, and anime series The World's Strongest Rearguard: Labyrinth Country's Novice Seeker, where she joins the main protagonist Arihito's party. In the Japanese version of the anime, she is voiced by voice actress Yuka Aisaka.

Melissa serves as a monster dissector, a role that involves analyzing and understanding the creatures the party encounters in the labyrinths. Her background reveals that she is of mixed heritage, as her mother was a demi-human. This aspect of her lineage is presented as a contributing factor to her generally reserved and emotionally controlled personality.

In terms of combat abilities, Melissa is a rearguard fighter noted for her exceptional speed and agility. Her primary weapon is a whip, which she wields with devastating effect in battle. Beyond her direct combat skills, she also possesses a range of specialized support abilities. These include the Cat Step skill, which enhances her evasion rate and can taunt an opponent upon a successful dodge, requiring the prerequisite Cat Walk skill. Another ability, Plattered Alive, increases the likelihood of landing a fatal blow against a fish-type monster whose vitality has been sufficiently lowered. She also has access to utilitarian skills such as Toxin Test, which allows her to detect and reduce the effects of poisons in consumable items.

Melissa's motivations and development are closely tied to her journey as a member of Arihito's party. As they take on increasingly dangerous quests and advance to higher district levels within the Labyrinth Country, she works to grow stronger alongside her companions. Her personality is characterized as fierce and determined when it comes to protecting her friends, yet she is also a kind and compassionate individual who seeks to help those in need. While she is generally emotionally reserved, being a member of the party allows her to connect with others and develop as a reliable and courageous rearguard.