Mozgus

Mozgus serves as one of the chief Inquisitors of the Holy See, traveling the world with his group of torturers, sent to root out a violent cult of heretics in the city of St. Albion. He is the main antagonist in the Tower of Conviction, hindering Guts, who tries to save Casca, with his excessive religious zeal. His symbol is four torture wheels, embodying his willingness to use torture as a way to cleanse people from evil.
Prior to the events told in the Resurrection Arc, Mozgus was a zealous Inquisitor acting on behalf of the Holy See. There, he recruited a small group of marginalized, disfigured individuals, comforting them by reading parts of the Holy See Doctrine meant to reassure them that even their disfigurements were meant to be worn with pride as a gift from God. He trained them in his particular brand of torture, which was vicious and rarely allowed its survivors to walk away without serious wounds.
He is then sent to St. Albion to root out heretics on behalf of the Holy See, requesting the Holy Iron Chain Knights as his personal guard. Although a true heretical group is brewing in the mountains surrounding St. Albion, based on orgiastic rituals, Mozgus himself apparently does little to stop them, managing to capture many of them only through Farnese's intervention. Instead, he sets every bit of his attention towards smothering in blood and torture the rebellions of the poor and starving population of St. Albion against the tyrannical rule of the Holy See. Mozgus sees such acts of defiance against himself as defiance against God, whose rule he is meant to embody.
Physically tall and strong, harsh and demanding with everyone, even himself, he impresses Farnese by smothering several rebellions with the threat of death and torture, sparing only a young mother asking for more food for her starving child. Though Mozgus does give the child food and medical attention, he sentences the woman to torture with a tearful prayer that she survive the "test" that God has prepared for her, attempting to use the encounter as a lesson to Farnese about the harshness of God's doctrine.

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