Kasane Teto is a Japanese UTAU who was originally created as a troll "VOCALOID" by fans. Her surname Kasane literally means "heavy sound" or "overlapped sound", so these interpretations are widely accepted among fans. TWINDRILL, however, has not released any announcements about the meaning of the name. Her name Teto comes from Tetopettenson, a parody song of Le Beau Tambour. Although her voicebank is only for use in UTAU, many people still mistake her for a VOCALOID.