I don't think that's beast Eddie. Okay, hear me out. In that video, we get a view of two new characters: that beast thing, and a concert Eddie. I think that beast Eddie isn't an Eddie at all. I think that this is the meaning of this game's name: Legacy of the Beast. I think that thing is either some primordial form of the Beast we all know, or it's some greater force behind his evil. Or maybe he's the boss in the gauntlet, I don't know. Either way, I don't think that's an Eddie.