Wow...
I first heard this, not from listening to it here, but playing EPF3 before I went to work a few mornings ago. Akron's intro, mixed with this theme, and then his taunts throughout the battle completely got me hooked. I was pretty tired from lack of sleep, but once I got into the battle with Akron, I was completely awake and mezmerized by this. This is an outstanding match to that battle and even listening to it here I can see myself spamming Dispel every few turns along with Genesis every time it comes availble. And that was on Normal mode... I couldn't put myself through the torture of Epic.
But back on topic, this would strike fear in your heart no matter WHAT you were fighting. The only downside is the gap in the loop. Honestly, that's the ONLY negetive thing in the whole song imo. So 10/10 for an amazing Deity-type boss theme!