Fyodor Karamazov

Behold, the man and his chair

Lord Inquisitor Fyodor Karamazov is one of the most well-known members of the Ordo Hereticus. This is not because of any good reasons, except for maybe that pimping-dreadnought-toilet-seat called the "Throne of Judgement".

The old man's infamous for his scorched-earth approach to things. If he sees any heresy, he blasts it from orbit with no regard to any collateral damage. If he needs a militia, he'll just requisition from whatever's available and send them to do the fighting...and then send orbital bombardments on their heads.

that one time on Salem Proctor

Fyodor is hated by the Ecclesiarchy and the Thorian-inquisitor (a group of pro-resurrection inquisitors that wants to transfer Emperor's soul to someone similar to Sebastian Thor), and for a good reason too. It all started on a planet called "Salem Proctor"; basically, the planet's cardinal was an asshole heretic and everyone rebelled. A preacher named Icarael led the main rebellion, and everyone was so moved by the his faith and actions that the Thorian's planned to snatch him away, until Fyodor came and ruined everything.

Fyodor put Icarael on trial and tortured him for six month straight in a fortress named Sevarian without letting anyone in, not even other Inquisitors. This pissed everyone off, so much that the Ecclesiarch: Decius XXIII demanded the preacher's release or they are going to shell the damned place. Unfortunately, by the time the Ecclesiarch's demands reached him Fyodor had already proclaimed Icarael a heretic, and executed him via incineration. The Ecclesiarchy were so fucking pissed that they are going arrest the damned walkie-potty bald man until the taint of chaos was uncovered among those who followed Icarael's teachings. Fyodor was publicly vindicated and got away, while both the Ecclesiarchy and the Thorians remained pissed off at him.

He also may or may not be the Emperor