Character
Shiro
Shiro in Assassination Classroom (2013), played by Ryota Takeuchi.
Kotarō Yanagisawa (柳やなぎ沢さわ 誇こ太た郎ろう, Yanagisawa Kotarō), initially known as Shiro (シロ), is a mysterious scientist responsible for creating the tentacles, which establishes him as one of the main antagonists of the series.
Read more about Shiro on Assassination Classroom Wiki at Fandom