Ok I just want to say that it might not be an enemy. Don't just think in the box (I think out of a irregular rhombus but thats a mental patient thing).
If you look at my answers they are stuff that seems a little off or you wouldn't even expect that. So my NEW guess for this riddle is...

so guess what i think it's... ... ... ...

my favourite summon
Bahumet Zero
The echo (the roar)
the rage and red (the fury)
cant avoid strength (the attack)
weakness prevail (the end)