Shinya Aiba, known as Tekkaman Evil, is a crucial character in the anime series Tekkaman Blade. As the younger brother of the protagonist, Takaya Aiba (Tekkaman Blade), Shinya is initially a promising astronaut before being turned into a Tekkaman by the alien Radam. Under the influence of the Radam, he becomes Tekkaman Evil, a formidable adversary to his brother. Despite his antagonistic role, his internal struggle and complex relationship with his brother add depth to his character, making him both a tragic and compelling figure within the series.