Spike-Backed Titan Tegosaurususu (スパイクバックドタイタンテゴサウルスス Supaiku Bakkudo Taitan Tegosaurususu) is Crystal Tribe (クリスタルトライブ Kurisutaru Toraibu), the last & strongest of the Tribemen. When all of his comrades were destroyed, he gathered a piece of each one & absorbed its power so he would know what to expect from the Survivormen. He was able to overpower the Survivor God & the Survivor Knight. In a last minute attempt, they called on the power of the Wild Cerberus to destroy him in Episode 48.