I have an easy solution. It is simply to put it in a proper contects. Everyone is free to dream as they will, and feeling guilty is no good. Perhaps, if someone's dreams disturb them, then they can look into it, and maybe grow by it. Self-judgement is of little use.

Here is my system of dealing with the issue. I simply create a background story in which i am engaging in violence for the sake of rescuing or protecting. Another option is to make the DC represent brain eating zombies. Who can say that fantasies about being a hero are harmful?

Some peoples versions of 'goodness' are people like Gandi. However, what about the Seal-6 team that rescued 2 Americans from Samoli pirates? They are heros! The world needs heros, and if a passifist does not want the role, surely they can allow someone else to fill it.

In conclusion,,, if you want to fight and kill,,, fight and kill BAD GUYS, while rescuing a damsel.

There is your answer about sex with DCs. If you are dreaming about rape, look into your self and ponder. If instead you just like to get some action, work it into a story. What if the female DC will not play along??? Then work on your self image and dream control. Maybe if you rescue her from ninjas she will be more friendly.