Fukasaku (フカサク, Fukasaku), often referred to as “Head” (頭, Kashira) is an elder toad over eight hundred years old that resides on Mount Myōboku. As the heirs of the Great Toad Sage, he and his wife Shima are revered as the “Two Great Sage Toads” (二大仙蝦蟇, Nidaisengama).