User blog comment:Dragon´s Blade/World Coexistence Alliance/@comment-78.0.21.141-20140629152041/@comment-78.0.21.141-20140629205313

(Elpidios and Aries are compatible because they share a lot of similiarities, one of them is wisdom and fighting skills (Elpidios can overpower Lanius and even tach Lanius how to fight).That is the principle of compatibility: The brain of the host emits EM waves that match the ones of a EM being, this waves show the personality (rage,comedian and so on).Most will try to posses the hosts (even though when they fuse they both have their conscousness into one body. This article from Megaman wiki shows how the fusion happens.)

Lanius: And it took you so long,Mark? Where is Rodney?