Listen to Robot Unicorn Attack Theme (From "Robot Unicorn Attack") online. Robot Unicorn Attack Theme (From "Robot Unicorn Attack") is an English language song and is sung by Anime Kei. Robot Unicorn Attack Theme (From "Robot Unicorn Attack"), from the album What's App? (8 Great Gaming App Themes) [Covers Performed by Anime Kei and Thematic Pianos], was released in the year 2013. The duration of the song is 2:36. Download English songs online from JioSaavn.