Count Brocken

"“That loser, that sponge… That parvenu, that lazy bones! How dare he say I'm incapacitated?!” —Ramay, showing disdain for Brocken" Count Brocken Grimmer (ブロッケン・グリマー伯爵) was a lieutenant serving in the Mycenae Empire and the Underworld Legion. He first appeared in Gamera vs. The Great General of Darkness.

Madman in the Reich
At some point, in April 1945, after the Allied and Soviet began sweeping across Nazi Germany, knowing that the war was lost, Brocken fled to Japan where he encountered a group of Incubi who led him a passageway to an underground chasm, where the present-day Yomihara would be located and where they crossed through a Demon Gate to the Underworld. There, the demons told Brocken that they would give him more power by having him give up his humanity and become an immortal vampire, so that he could succeed where his superiors have failed. Brocken agreed and transformed into a vampire. He then sought refuge in the Underworld Commonwealth nation of the Principality of Revia, where he joined the country's military and rose to the ranks of a major.

Rebellion and Madness
Dissatisfied with the Revian government's inability to take action under an incompetent federal body according to him, Brocken, who was a major in the Revian armed forces, led a military coup in an attempt to overthrow the Princess Sarah Leviathan and create a new government to break away from the Underworld Commonwealth. However, it failed and as a result, Brocken was captured, sentenced to death and guillotined. However, the next day, Hades stole his body and head and resurrected him. Swearing loyalty to him, Brocken swore revenge against the Revians.