Jun Hazumi is the stage name of Shigetoshi Takahashi, a Japanese voice actor born in Tokyo on July 14, 1934. He is affiliated with the talent management firm Arts Vision, having previously been associated with Production Baobab. His career, which began around 1960, spans a wide range of roles in television animation, original video animations (OVAs), theatrical films, and dubbing for foreign live-action and animated productions.

Hazumi's voice acting portfolio is extensive, featuring numerous roles in anime from the 1960s through the 2010s. He has voiced characters in many classic and long-running series. Notable television credits include the Captain in the 1963 Astro Boy, roles in Lupin The Third Part II, various characters in the Mobile Suit Gundam franchise such as Ems Izuruha in Mobile Suit Gundam 0080: War in the Pocket, and parts in Texhnolyze, Kino's Journey, and Mushishi. He also contributed to popular series like Case Closed and Zatch Bell!.

The actor has a significant body of work in OVAs and theatrical animations. He voiced Genzo Makishima in both the 1986 OVA Guyver: Out of Control and the 1989 series The Guyver: Bio-Booster Armor. His OVA credits also include Kiyoteru Kai in Patlabor and a role in Legend of the Galactic Heroes. In animated films, he is known for his performances as Zekkai in Sword of the Stranger and the Elderly Man in Death Billiards. Additional roles matching those provided in the query include Nerigun in Ziggy Soreyuke! R&R Band and the character credited as Director in The Tokyo Project, a role listed as Director Doyle in Dancougar: Blazing Epilogue.

Beyond original anime, Hazumi was highly active in Japanese dubbing of foreign media. His voice can be heard in numerous film and television series for Japanese audiences. He dubbed William Shatner as Captain James T. Kirk in Japanese editions of Star Trek V and Star Trek VI, and Christopher Plummer as General Chang in the latter. He also provided voices for Pinhead in a television edition of Hellraiser, Billy Dee Williams as Harvey Dent in Batman, and Ed Asner as Guy Banister in JFK. His work in dubbing Western animation includes the villainous Negaduck in Darkwing Duck and Roland Daggett in Batman: The Animated Series.