Suguru Inoue is a Japanese actor and voice actor born on December 4, 1981, in Kanagawa Prefecture, Japan. He began his entertainment career in the early 2000s, initially as a member of the theater troupe Func A ScamperS 009. He was later affiliated with the agency Ogi Pro THE NEXT before becoming a freelance actor.

Inoue's most prominent and career-defining role is voicing Takeshi Yamamoto in the long-running anime series Katekyo Hitman Reborn! This part brought him widespread recognition and remains a favorite among his fans. Beyond this signature role, he has built a diverse portfolio of voice work in anime, including appearances in series such as Capeta, Naruto Shippuden, Tennis no Oujisama, Inazuma Eleven GO Chrono Stone, and the Tamagotchi! series. He has also contributed to OVAs and theatrical films, providing voices for Makoto Shinkai's works like The Garden of Words, Your Name, and 5 Centimeters per Second. In the realm of video games, Inoue has consistently reprised his role as Yamamoto in numerous titles based on Katekyo Hitman Reborn! and has also voiced characters in games like Yu-Gi-Oh! 5D's Tag Force 6.

In addition to his on-screen and voice work, Inoue is known for his strong presence in stage productions and radio. He has balanced his voice acting career with roles in various stage plays and reading performances. He co-hosted several radio shows, particularly those related to the Reborn! franchise, where he developed an on-air persona that endeared him to listeners and earned him nicknames like Sugurumpa and Mocchan from his colleagues. His work on the series also led to the release of character song CDs, both solo and in duets with other cast members.

Throughout his career, Inoue has established a reputation among fans and peers for his friendly, approachable, and humorous personality, often becoming the subject of playful teasing during radio broadcasts and live events.