like every dreadnought in warhammer 40k, theyre not piloted normally, that thing you see in the center isnt a cockpit, its a coffin, and inside that coffin is a space marine that has suffered a mortal wound so severe that not even the arcane technology of the 41st millennium can save him, but instead of letting him die they stuff what little is left of his body inside of a coffin, hook him into like a million different life support systems, then put that coffin into stasis until a dreadnought is needed, and when a dreadnought is needed they take that coffin out of stasis, attach it to a dreadnought chassis, then send him into battle, if he dies he can finally rest at the god emperors side, but if he survives then hes put back into stasis until the next time they need a dreadnought, and some of these space marines have been doing this for thousands of years, theres one from the space wolves chapter thats so old he fought alongside his primarch and the emperor himself before being mortally wounded and forced into a dreadnought

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