Canary Karina is a central character in the anime Eagle Sam, where she serves as the assistant to the protagonist, Sam. Her role is established from the outset as the partner to the private investigator who is mysteriously transformed into an anthropomorphic eagle. She is a consistent presence throughout the series, aiding Sam in his various endeavors.

Canary Karina is most notably characterized by her appearance, which is described as comically busty. Beyond this defining physical trait, her personality is depicted as that of a loyal and reliable assistant. She actively helps Sam fight against the various antagonists they encounter, including a recurring nemesis who is a cockroach riding a skateboard. Her motivations are directly tied to her role as Sam's partner, showing a commitment to assisting him in his detective work and in combating the villains they face. She does not appear to have a separate or personal agenda outside of this collaborative effort.

In the story, Canary Karina's primary function is to support Sam. While Sam possesses a magical hat that contains almost anything he needs and the power of magical Olympic rings for difficult situations, Karina provides a more grounded, though still active, form of assistance. Her relationship with Sam is the key dynamic of the series; they work together as a team of two, fighting crime and dealing with the consequences of Sam's unusual transformation. Information regarding a significant personal development arc for Canary Karina or any unique abilities beyond her role as a capable assistant is not available. Her presence is integral to the premise of the show, establishing the partnership that drives the plot forward.