The shadow sighs. "No."

"What aspects of family composition can I change, then?"

"Their demonic bloodline."

"...aha. What bloodlines are there?"

"Umber, Grathas, Annique, and Blood."

"What are the differences between them?"

"Umber demons are shadowy creatures, strongly attuned to demonic magic. Grathas demons are hulking, wolflike abominations. Annique demons are metallic and attuned to lightning. Blood demons are the weakest of them all, and must feed on other intelligent species to survive."

"How does each bloodline affect the families?"

"All of them bear some legacy of their particular bloodline: for example, Lilim descended from Grathas demons have golden irises, while Umber bloodlines have purple hair. They also carry some of the innate strengths and weaknesses of their progenitors: Blood Lilim are incapable of using demonic magic, while Annique descendants are totally unharmed by electrical discharges."

"What are all the weaknesses and strengths of these bloodlines?"

"Umber and Grathas descendants are only able to call upon their bloodline powers for a limited time, but are able to take their true demonic forms - which are more powerful than the skills of the other bloodlines. Umber descendants have six limber tentacles in their demonic form and gain improved magical aptitude, while Grathas descendants become monstrous wolf-humans that are extremely physically powerful. 

Blood descendants are incapable of wielding demonic magic, and shunned as lesser by other demons, but are naturally telekinetic and highly intelligent. They are also slightly more charismatic than most. Blood descendants are unbothered by cold, but suffer more strongly in the heat. 

Annique descendants are obvious to others due to their metallic skin and hair, but are naturally extremely agile and immune to electrific discharges. They can throw bolts of lighting short distances, and anyone who attempts to lay hands on them without their consent will experience a serious shock." 

"Are there any other details you can tell me about these families and bloodlines?"

The shadow rolls its eyes. "Yes." 

It can rolls its eyes as much as it wants she will drain it of everything it knows.

"Are the details you can tell me about these families and bloodlines related to the weaknesses and strengths?"

"Yes."

"What other weaknesses and strengths do Umber descendants have?"