Hiroshi Karasuda is a Japanese voice actor born on October 9, 1984, in Yamaguchi Prefecture, Japan. He is affiliated with the talent agency Production Ace. Karasuda is a graduate of the Amusement Media综合学院, a vocational school for entertainment and media.

Karasuda's career in anime began around 2011, with one of his earliest and most prolific roles being in the series Nichijou, where he provided voices for numerous minor characters including a死神, Chiyoda, and various students and soldiers. This pattern of voicing a wide array of supporting characters, often in ensemble casts, has defined much of his career. He has consistently taken on such roles in a variety of productions.

Throughout the 2010s, Karasuda built a portfolio of work across different studios and genres. He had roles in Kyoto Animation's Chūnibyō demo Koi ga Shitai! franchise, playing characters like a国语教师 and other students. He also appeared in series such as The Troubled Life of Miss Kotoura, The Pet Girl of Sakurasou, and My Teen Romantic Comedy SNAFU. His credits extend to fantasy and action series, with parts in When Supernatural Battles Became Commonplace, Castle Town Dandelion, and The Asterisk War.

Karasuda has a notable and recurring association with the Strike Witches franchise, which connects to the user's example. In 2016, he voiced roles such as a管制 and 副官 in the spin-off series Brave Witches. He later appeared in the 2019 theatrical compilation film Strike Witches: 501st Joint Fighter Wing Take Off! Movie, where he is credited with the role of Guest Grandpa. This role corresponds to the "Grandpa" character in the Strike Witches: 501st JOINT FIGHTER WING Take Off! series mentioned by the user. He continued his involvement with the franchise by voicing characters like a邮递员 and 店主 in the 2021 series World Witches Take Off!.

His other work includes roles in the space opera series Space Battleship Yamato 2202: Warriors of Love, where he voiced加米拉斯兵 and other characters, as well as parts in Angolmois: Record of Mongol Invasion and the fantasy series Didn't I Say to Make My Abilities Average in the Next Life?!. Karasuda's career is characterized by extensive work in supporting and background roles, demonstrating his versatility and steady presence in the anime industry.