Lina Davis is a thirteen-year-old middle school student in Center City who serves as a cheerleader at her school. She comes from a wealthy family, a fact that creates tension in her personal life because her brother, Will, and her father disapprove of her friendship with Joey Jones due to his lower economic status and perceived lack of refinement. Despite this opposition, Lina genuinely likes Joey and remains a steadfast friend. Her role in the story begins when Joey, having repaired a broken toy robot named Heroman, uses the giant robot to save Lina from an immediate threat, an event that marks the first activation of Heroman’s powers. Throughout the series, Lina continues to be a source of emotional support and encouragement for Joey, often finding herself caught up in the dangers posed by the alien Skrugg invasion. She does not possess any special combat abilities or superpowers; her strengths lie in her loyalty, her determination to stand by her friends, and the normal, relatable perspective she brings to the extraordinary events around her. Her family’s wealth and protective attitude create ongoing obstacles, but Lina consistently chooses to follow her own feelings and help Joey whenever she can. Over the course of the story, she remains a consistent presence who embodies a caring and brave spirit, even though she does not undergo a dramatic personal transformation.