so, the troll ancestors are the pre-scratch versions of the alpha trolls/dancestors, right? is there a reason why they look more similar to the beta trolls than to their alternate versions?

The ancestors are post-scratch versions of the Alpha trolls. And they do look similar so I’m not quite sure what you’re talking about. And differences in appearance can be attributed to life choices or the fact the the ancestors are adults while the Alpha trolls are like 19/20