Janes, a Dogisian—a species framed as antagonistic—serves as an agent for her home planet, specializing in covert relations between Dogisia and Earth governments. Her core mission involves sabotaging the establishment of formal diplomatic ties between Earth and the Catians, especially after the Catian scout Eris's arrival. She executes schemes targeting the Catians, including direct attempts to eliminate Eris and her allies.

To achieve her objectives, she manipulates Earth organizations and exploits human suspicions or agendas against the Catians. Janes operates through intermediaries and subterfuge, reflecting her role in clandestine operations. She is consistently depicted within the context of the interstellar Dogisian-Catian conflict.

Her full name is Janis Alectos Carotenas Karinato. Within the CIA, she uses the codename JACK. Her physical appearance aligns with a stereotypical American portrayal: typically wearing a cowboy hat, denim shorts, a belt, cowboy boots, and a tank top. She is often shown consuming fast food. Her narrative function centers on representing Dogisian antagonism in the core conflict.