Well, only two of my people have any discernible history with Skallagrim, and therefore, the Dreamers. 

Worren, who is a basic fire ninja with the ability to summon/size manipulate weapons.

And Grim, whose abilities include not being able to be hit(and thus can't hit), until his scythe(utterly non-damaging) cuts through the opponent to mimic their abilities, then it's free range. He's the closest to being a Dreamer, and would probably have the most issue with you having anything to do with them. 

I have a lot of other characters though, so if you want you can pick out one you'd like to face.