Satoshi Judai is a Japanese actor whose work spans film, television, and stage, with his role as a maintenance crew member in the 2010 live-action film Space Battleship Yamato representing his connection to science fiction cinema, though he is not primarily an anime voice actor. He was born on February 19, 1981, in Saitama Prefecture, Japan, and has been active in the entertainment industry since the early 2000s. Standing approximately 173 to 174 centimeters tall with AB blood type, Judai has developed a diverse skill set that includes horse riding, contemporary sword fighting, swimming, skiing, snowboarding, and handball. He is a graduate of the Nameless School, a prestigious theatre school founded by renowned actor Tatsuya Nakadai. His career includes a significant body of work in Japanese television dramas, where he has appeared in popular series such as Death Note, Ryoji Shinikeiri no Kinen, Aishiteiru to Itte mo Yoi desu ka, and A Life: Itoshiki Hito. In film, Judai has collaborated with acclaimed director Takashi Miike on several projects, including the 2010 historical drama 13 Assassins, the 2013 film Straw Shield, and the feature Blue Planet Brothers, which was showcased at the Rome Film Festival. His stage credits are extensive, with lead roles in productions such as Nagasaki no Kane and Hannibal. While his filmography includes appearances in genre works like the live-action Space Battleship Yamato, where he played an unnamed mechanic, there is no evidence of work in voice acting for anime series, which distinguishes him from performers whose careers focus on that medium. Judai has maintained a steady presence across Japanese entertainment for nearly two decades, demonstrating versatility across multiple performance disciplines.