Belle Lynn is a character from the anime Infini-T Force, serving as one of the primary antagonists. She is a small, blonde, humanoid woman with a beautiful, youthful appearance that belies her true nature as a formidable alien warrior from another world. Her home planet and her entire race have been destroyed, leaving her as the last surviving member of her species. This tragic past is the driving force behind all of her actions.

Her personality is complex and marked by a deep-seated conflict. On the surface, she presents herself as dangerously seductive, often using erotic tones and behavior in her speech and mannerisms. It is unclear if this seductive nature is a calculated tool to achieve her goals or an inherent part of her character. Beneath this exterior, she harbors an intense and open hostility toward all beings who are not of her kind, stemming from a profound distrust of other races, which she believes is justified as they are responsible for the destruction of her people. Her ultimate motivation is the revival of her extinct race. To accomplish this, she seeks to collect strong genetic material from powerful males, which she intends to use to bear offspring and repopulate her species. Her secondary, and equally important, goal is the extermination of all other species to ensure her kind never faces the same threat again.

In the story, Belle Lynn is an associate of the enigmatic figure known as Z. She aligns herself with him primarily for access to his exceptional genes and to obtain a mysterious artifact known as the Case, both of which she believes are key to her mission. Her role is that of a powerful and driven adversary to the four main heroes. She frequently roams the city, biting passersby to collect genetic samples, but her focus quickly zeroes in on one of the heroes, Joji Minami, the transformed warrior known as Tekkaman, whose genes she deems highly desirable.

Her key relationship is with Joji Minami. Their dynamic forms the central arc of her character development. While she initially views him as little more than a prime genetic donor, a pivotal moment occurs during their first major battle. After a devastating attack causes a building to collapse, Joji risks his own life to save her from being crushed. This act of selfless heroism, which goes against everything she believes about other species, causes her to momentarily open her heart to him. She begins to seek a genuine connection with him, but her core intentions are ultimately rejected by Joji, who cannot accept her genocidal goals. Even after this rejection, she remains a persistent antagonist, continuing to clash with the heroes in her quest for the power she needs.

As a fighter, Belle Lynn is exceptionally powerful, capable of battling heroes like Tekkaman and Gatchaman on equal or superior terms. She wears a form-fitting powered suit that provides immense durability, allowing her to withstand being hit by a truck without injury. Her combat style is versatile and deadly. She can replace her limbs with specialized prosthetic parts for combat, allowing her to fly and maneuver in gravity. Her standard arsenal includes hidden micro-missiles, an anti-materiel rifle for long-range attacks, and a bladed tail for close-quarters combat. Her most devastating weapons are two super-high-output beam cannons, each powerful enough to counter the heroes' signature Voltekka attack. Beyond her direct fighting abilities, she also possesses advanced manufacturing skills, enabling her to create powerful copies of the heroes themselves to do battle on her behalf.