This is the thing that I've not been able to comprehend completely. If Epsilon has all the Alpha's memories, thus basically making it the alpha itself, no? I mean, it/he remembers all the stuff that happened in the old Blood Gulf series, no?
(Spoiler alert)
But the original alpha unit was destroyed at the end of that epic season few years ago, so what does that make of Epsilon? Is it the old Alpha or just a part of Alpha? So confusing.