Forum adverts like this one are shown to any user who is not logged in. Join us by filling out a tiny 3 field form and you will get your own, free, dakka user account which gives a good range of benefits to you: No adverts like this in the forums anymore. Times and dates in your local timezone. Full tracking of what you have read so you can skip to your first unread post, easily see what has changed since you last logged in, and easily see what is new at a glance. Email notifications for threads you want to watch closely. Being a part of the oldest wargaming community on the net. If you are already a member then feel free to login now.

Are there any already existing rules for them?

I've got a nice conversion idea but would prefer to do something with it apart from shove it on a shelf and look at it.

I think the adeptus mechanicus fandex has something on them

belloflostsouls lords of battle has rules for them as well