Board Thread:General Discussion/@comment-25266931-20161222004503/@comment-25936766-20161225064143

The young ones usually die because they berserk-rush and die like idiots. Those who don't learn to not do that, and become stronger and more experienced over time, plus the requisite increase in size and boneplates.

If stronger Grimm are starting to show themselves, then among them may be stronger members of already-seen Grimm. Perhaps some variants (as in, a real relative "species", not something like the Alpha Beowulf that is literally just an older-and-stronger Beowulf).

Besides, at least Beowulves have been improving. They actually look like wolves now instead of apes.