Harris, an American extraterrestrial researcher at a beachside cave-based Alien Research Lab, holds an MIT degree and speaks English and Japanese with a persistent accent. As the tallest African-American member of his team, he sports dark skin and alternates between a professional ensemble—blue shirt, dark tie, white lab coat, dress pants—and casual beachwear during undercover operations. Collaborating with colleagues Clark and Martin, collectively dubbed the "Three Stooges," he engineers experimental devices to study or capture Squid Girl. Though their inventions frequently backfire or trigger chaos, Harris distinctively volunteers to test prototypes alone or on himself, heightening mishaps.

His supervisor, Cindy Campbell—a fellow MIT graduate—orchestrates the team’s reconnaissance missions. Despite the recurring malfunctions, Harris’s work sporadically yields serendipitous breakthroughs, such as an accidental cancer cure developed during an unrelated project. His narrative focus remains tightly aligned with his professional antics, comedic collaborations, and reactive role in Squid Girl–centric schemes, without elaboration on personal history or character evolution beyond these parameters.