Shuuhei Iwase is a Japanese voice actor born on October 25 in Chiba Prefecture, Japan. He is affiliated with the agency FIRST WIND Production, having previously been associated with TAB Production and Ability Soul Pro. He stands 174 cm tall and has B-type blood. His personal interests include watching movies, listening to music, fishing, and watching sports. He is also skilled in singing and baseball, and has a pet cat named Momo.

Iwase began his professional voice acting career in 2011, taking on minor roles in television anime such as Nura: Rise of the Yokai Clan: Demon Capital and Freezing. In the following years, he continued to build his experience by voicing a variety of supporting characters, soldiers, and students in numerous popular series, including Accel World, Mobile Suit Gundam AGE, and Kuroko's Basketball.

His career features a mix of secondary and recurring roles across a wide range of anime. He provided the voice for Muraku Hōjō in Danball Senki Wars and later voiced Raios Antinous in Sword Art Online: Alicization. He has been a consistent presence in the long-running Tomica Hyper Rescue Drive Head franchise, credited as the voice of Drive Gear in various installments including the Head: Tomica Hyper Rescue – Kidō Kyūkyū Keisatsu. In 2020, he voiced Masamune Habutae in the science fiction mystery series ID: INVADED. More recently, in 2022, he took on the role of Hangetsu Shinonome in Lucifer and the Biscuit Hammer. His work also extends to video games, with roles in franchises like Mobile Suit Gundam and Sword Art Online.