OVA
Description
Emeralda Sanborn is a central figure in Cobra The Animation: Time Drive, where her story serves as the emotional and narrative core. She is revealed to be the original human identity of Armaroid Lady, the android companion who fights alongside the space pirate Cobra in the main continuity.

In her original life, Emeralda was the princess of the Duchy of Sanborn, a principality that had fallen under the oppressive rule of the tyrant Lord Giros, a former fortune teller who seized power and terrorized the local lords. Rather than a passive royal, Emeralda is characterized by her fierce, rebellious spirit and a strong sense of justice. She actively leads a resistance movement against Giros and his chief enforcer, the dark sword-master Manidou, fighting not only for her own freedom but for the liberation of her entire people. Her personality is defined by bravery and a willingness to sacrifice everything for those she loves and the causes she believes in, earning her the description of a warrior princess and a freedom fighter.

Her role in the narrative of Time Drive is pivotal, as the entire plot is driven by a temporal crisis affecting her future self, Lady. Cobra travels back in time to uncover the cause of Lady's disappearance and becomes directly entangled in Emeralda's struggle. Upon arriving in the past, he encounters her during a failed assassination attempt on Lord Giros, for which she is captured. Initially, Emeralda does not recognize Cobra, who presents himself under the alias Joe Gillian. Her relationship with the time-displaced pirate is complex, as she interacts with both his future self, who knows her destiny, and his younger past self. The future Cobra guides her, telling her to trust his younger incarnation, and through these intersections, a deep bond of trust and romance forms between her and the hero.

The most significant aspect of Emeralda's character is her transformation. At a critical point in the story, she suffers a fatal injury. Faced with the choice between death and losing her humanity, she makes a conscious decision to survive. Her consciousness is transferred into a cybernetic body, becoming a living metal being—a process that reborn her as the armaroid known as Lady. This act is portrayed not as a tragedy but as the ultimate expression of her loyalty and desire to remain by Cobra's side, fully aware of the cost. Her past experiences and memories as Emeralda directly inform Lady's identity in the future, and this sacrifice creates the legendary partnership that defines the series.

In terms of abilities, while human, Emeralda is a capable combatant and a determined leader, willing to engage in direct, high-stakes actions like the assassination attempt on Lord Giros. She also comes into possession of a powerful and dangerous artifact known as the Black Hole Diamond. This object has the unique property of transforming men into weapons and weapons into tattoos, and if wielded by anyone other than its rightful owner, it can become a weapon of mass self-destruction. This diamond plays a key role in the struggle against the tyrannical regime. Her transformation into Lady Armaroid grants her the abilities of a highly advanced cyborg, including superhuman strength, durability, and various integrated weapons, making her a formidable partner for Cobra in countless future adventures.