Shu Watanabe was born on October 26, 1991 in Yurihonjo, Akita Prefecture, Japan. He is known for his work on Kamen Rider Movie War Mega Max: Kamen Rider vs. Kamen Rider Fourze & OOO (2011), Kamen Rider Movie War Ultimatum: Kamen Rider vs. Kamen Rider Wizard & Fourze (2012) and Kamen Rider × Super Sentai: Super Hero Taisen (2012).