Matthew Denton is a science teacher at Center City Middle School in the anime Heroman. He is an inventor and an enthusiast of extraterrestrial life, known among his students and colleagues as Professor. Denton has black hair, black eyes, and often appears wearing glasses, a lab coat, a tie, and a watch. He is passionate about scientific discovery and has dedicated considerable time to experiments aimed at communicating with alien civilizations. This ambition drives a central event in the story when his successful contact with an extraterrestrial signal inadvertently attracts the hostile Skrugg to Earth, triggering an invasion. The guilt he feels over this unintended consequence becomes a primary motivation for his actions throughout the series. He is determined to help the main character, Joey Jones, and the giant robot Heroman in their fight to protect Center City.

Denton is portrayed as eccentric and sometimes less mature than the teenage students he teaches, a trait that provides moments of comic relief. Despite this, he is highly intelligent, astute, and relies on his analytical mind to solve problems and devise strategies against the Skrugg. He serves as a mentor figure to Joey, offering guidance and technical support as Joey learns to control Heroman. His bond with Joey is one of his most significant relationships; he respects Joey's courage and works alongside him as a collaborator rather than just a teacher. He also interacts with other students such as Lina Davis and Simon Kaina, and is a colleague of the mathematics teacher Vera Collins.

As the story progresses, Denton becomes more deeply involved in the larger conflict. His background as a brilliant inventor is further revealed, along with his role in developing advanced robotic technology that proves crucial in battles. He demonstrates a strong sense of responsibility and a commitment to ethical science, pushing the boundaries of his inventions while remaining focused on protecting others. His dedication to his craft and his willingness to put himself in danger to help Joey and Heroman highlight his development from an eccentric dreamer into a key ally in Earth's defense. His notable abilities lie in his scientific expertise, particularly in robotics, alien communication, and technological innovation, which he uses to support the fight against the Skrugg.