Great Leader of Delza Army

Great Boss of Delza Army (デルザー軍団大首領): The true leader of the Delza Army. The seven riders defeated the Great Boss in the final episode in a battle inside of the rock monster's head, causing him to explode.

He is yet another incarnation of the Great Leader.

Portrayal
As with most incarnations of the Great Leader, the Great Boss of Delza Army was voiced by Gorō Naya (納谷 悟朗).