Hiroshi Shirokuma is a Japanese voice actor born on August 4, 1979, in Kanagawa Prefecture, Japan. He is affiliated with the talent agency Production Baobab. His voice is characteristically deep, which often leads to him being cast in roles that require a presence of strength, authority, or a larger-than-life physicality, frequently portraying "big guy" characters.

Shirokuma's career encompasses a wide range of roles in anime, video games, and foreign film dubbing. In anime, he has voiced a diverse array of characters. He played the soldier Gazef Stronoff in the Overlord series and the gentle yet powerful brown bear Riz in BEASTARS. He was also the voice of Giichi in Blade of the Immortal, Totetsu in Yashahime: Princess Half-Demon, and Chongire in Tropical-Rouge! Precure. His film work includes a role in Mobile Suit Gundam: Cucuruz Doan's Island as Elran.

He has had recurring roles in several long-running franchises. In the Utawarerumono series, he has voiced characters such as Munto and Irawaji in Mask of Truth, as well as others in earlier installments. In the Battle Spirits franchise, he has taken on roles like Graham Leoneed in Battle Spirits: Mirage and Battle Spirits: Kakumei no Galette, and Geraid in Battle Spirits: Brave. He also provided the voice of Woodstock W in Log Horizon: Destruction of the Round Table.

Beyond the roles listed by the user, Shirokuma's bibliography is extensive. He has voiced characters in major series such as Chōjū Giga in Fairy Tail, Gyukimaru in One Piece, and various roles in the Naruto and Boruto franchises. He has also had a significant presence in video games, with notable performances including Caius Ballad in Final Fantasy XIII-2, Lightning Returns: Final Fantasy XIII, and Dissidia Final Fantasy Opera Omnia, Cidolfus Telamon in Final Fantasy XVI, and Karl Heisenberg in Resident Evil Village. His work in dubbing foreign media includes providing the Japanese voice for Kanan Jarrus in Star Wars Rebels, Ronan the Accuser in various Marvel projects, and Big McIntosh in My Little Pony: Friendship Is Magic. In addition to his voice work, Shirokuma also manages a YouTube channel named "Shirokuma-chan, Neru," where he streams video game content.