Ive found what was a deamon prince in my deamon army (based on the vargulf),and was kind of intrigued on how to use chaos spawn,and while im at it,ive converted what was my junkie pariah into a mutant beasthandler along with 2 dire wolves(new ones) and want to use them as mutated hounds and was thinking of using the mastiff rules???
cheers
matt
Take a look at the Alien Generator and Mutant rules in the Skoll Archive. Pile loads of mutations, counts-as biological weaponry, and then add various animalistic special abilities - perhaps Nerves of Steel and Force of Will, though thats not certain, true grit, frenzy, stuff like that...