He's woken up in another time, in a world that's cold and lonely and his crew, his family are held to ransom against him. He's tired and alone and plagued with nightmares, and somehow they believe this will make him weak, force him to work alongside them, but they are wrong.
He's quicker than they are, he's cleverer than they are, he's stronger than they are and he is not willing to be beaten by someone underneath him. He doesn't exist, and so no one outside of their 'project' knows of him. This only makes things easier.
He was unfrozen to start a war, and start a war he will do. But it isn't the war they think.
He leaves at the first chance. No one questions because no one knows who he is. His first move is to gather all of the Admiral's crew in one place. Because he will turn his threat on its head and fire it back at him. Marcus holds his crew's lives over him? He'll take Marcus' crew before he has a chance to implement it and he'll leave before they can catch up with him.
And then Marcus will realise he has no threat left.
And then he will take him out.