Favorites of (False or True) Final Boss themes

[Fates-Blade-900]

What are some of, or just one of your favorite final boss themes? (Remixes are allowed.)
Here's one of mine:

 

[Fates-Blade-900]

Another 3
My favorite final boss theme in the Battle Network series
My second favorite final boss theme in the Battle Network series
My third favorite final boss theme in the Battle Network series

 

[Fates-Blade-900]

Another one of my favorites, from the classic Megaman 6, Last Boss:

 

[Alexander1970]

It keeps rousing me again and again....

Spoiler: Personal Note:

I HATE TODAYs GAME SEARCH BEHAVIOR.
Every time a remake/reboot comes out - NO ONE cares of ORIGINALS.FIRST 3.581 search resutls - Resident Evil 2 REMAKE (Do not understand it wrong - I like the Remake of Resident Evil 2 ).And you constantly have to ADD to the search "CLASSIC" or "ORIGINAL" or "RETRO".

 

[Tom Bombadildo]

The only correct answer.

 

[Fates-Blade-900]

Another one of my favorites:

 

[Fates-Blade-900]

I was happy when I got here since I find most classic Mario games kinda hard and I played through all 3 Bros. games (save states were included in my emulator):

And this was fun too:

 

[Fates-Blade-900]

Hard but gets a little bit easier when you get used to him, the battle was fun, one of my favorites here it is :]:

 

[Fates-Blade-900]

One of the hardest final bosses I encountered:

And another:

Easy but still one of my favorites: