Jun Hirose is a Japanese voice actor, stage actor, and narrator born in Ibaraki Prefecture, Japan, on December 16. While the year of his birth is not publicly listed in available records, his professional activities have been documented from 2014 to the present. He is a graduate of the Entertainment Media Comprehensive College, having completed his studies in 2013, and became affiliated with the talent agency Mausu Promotion in 2015.

Hirose began his voice acting career in 2014 with small roles in several television anime series. His early work included a student in Fate/stay night [Unlimited Blade Works], a customer in Blade & Soul, and a floor chief in偶像活动! (Aikatsu!). The following year, he appeared as a bandit in the web anime Ninja Slayer and as a soldier in The Heroic Legend of Arslan (六花的勇者).

Throughout the late 2010s, Hirose steadily built a portfolio of supporting roles. In 2016, he voiced a German naval officer and a government official in the espionage thriller Joker Game, as well as a soldier in Tales of Zestiria the X. His 2018 credits include a male teacher in ISLAND, a reporter in the baseball anime Gurazeni (also known as Money Pitch), and a variety of roles such as a citizen and enemy soldier in LOST SONG. In 2019, he played the role of Corell in the fantasy isekai series Kenja no Mago (Wiseman's Grandchild).

Later credits include a subordinate of the character Jo in the 2020 psychological thriller pet, a general-purpose死神 (shinigami) in The World Ends with You The Animation in 2021, and a television reporter in the long-running series Lupin the Third Part 6 across 2021 and 2022. In 2024, he appeared as a security guard in the Netflix martial arts anime series Garouden: The Way of the Lone Wolf.

In addition to his television and web anime work, Hirose has contributed his voice to several animated films. His filmography includes a role as a mercenary in the 2019 film Psycho-Pass: Sinners of the System Case.3 - On the Other Side of Love and Hate.

Hirose's known personal interests include the practice of Shorinji Kempo. He also lists tarot card reading and numerological fortune-telling as skills.

Notably, in the context of the user's specific example, while Hirose has voiced numerous soldier and guard characters throughout his career, available records do not include a credit for the role of Carmilla's soldier in the Castlevania series. His most frequent on-screen collaboration has been with fellow voice actor Kenjiro Tsuda, with whom he has worked on a number of projects. The search results do not indicate that Hirose has received any major industry awards or honors for his work.