Fudo, Japan 20th Century

He is seen as a protective deity particularly in Shingon traditions of Japan where he is known as Fudō Myō-ō Fudo Myoo.

Acala (Sanskrit: अचल "immovable") is a dharmapala prominent in Vajrayana Buddhism and East Asian Buddhism.

For more information: http://www.shingon.org/deities/jusanbutsu/fudo.html