Ferocious Knight D (獰猛の戦騎D Dōmō no Senki Dī) is the main antagonist of the Kyoryuger Summer Movie Zyuden Sentai Kyoryuger: Gaburincho of Music. He was a powerful Debo Knight who forced Zyudenryu Tobaspino to forge a partnership with him and became Deathryuger (デスリュウジャー Desuryūjā).