Shun Horie is the voice actor of Pierre from the unit Beit. He is currently affiliated with Raccoon Dog. His hobbies are going for walks, writing poetry, and speed-reading. He also enjoys movies, even having his own serialization corner in Seiyuu Men magazine called "Horieru, Cinemaru" where he analyzes and reviews movies of every genre. Shun enjoys writing as well, currently having a Kanji Kentei Level 2 (the 2nd highest level) and English Level 2 (CEFR B1).
During SideM's first live, he was still working a part time job because he couldn't afford to pay his living expenses with voice acting work alone. He even went to work at that job on the same night as the live.
He is one of the most active SideM voice actors on Twitter. He was well-known for posting 20+ fleets a day (usually of his pet cat) and went through a period of "mourning" when Twitter removed the fleeting function on August 3rd, 2021. He is also known for posting about SideM quite often, sometimes posting selfies/memories of SideM events months after they happened and retweeting Pierre-related content frequently. The current amount of times he's retweeted the announcement tweet for Pierre's solo being added to LIVE ON ST@GE is: 7.
315PRO Night!: Hosted episodes 230-232, 236-238, and 242 and appeared on episodes 12 and 75 as a guest.
- Angolmois: Record of Mongol Invasion as Amushi
- Boku no Kokoro no Yabai Yatsu as Kyoutarou Ichikawa
- High Card as Leo Constantine Pinochle
- PriPri Chi-chan!! as Yamato Suō
- Sarazanmai as Enta Jinnai
- The Idolmaster SideM as Pierre
- World Trigger 3rd Season as Kai Minamisawa
- Black Clover (2017) as Asta (replaced by Gakuto Kajiwara in the TV series)
- Elsword as Noah Ebalon
- Fire Emblem: Three Houses as Linhardt von Hevring
- Genshin Impact as Aether
- The Legend of Heroes: Kuro no Kiseki II – Crimson Sin as Ixs
- He is a fan of his unit mate Yuichiro Umehara. Other SideM voice actors often tease Shun for talking about him a lot.
- His favorite food is eggplant.
- He ran track-and-field in high school.
- He first became interested in voice acting because he admired Wataru Takagi for being able to voice both children and adult characters.
- He has a cat named Daifuku.
- He is a member of the group SparQlew.