Board Thread:Questions and Answers/@comment-6011882-20130308175404/@comment-6238175-20130308224837

In Galaxy Saga, the different raid bosses are placed into different catagories that are named in the raid skills.

It's possible that LoC has a similar design, such that the different names represent different subsets of the raid bosses. However, there doesn't seems to be a clear signal which bosses belong to each group.