After looking at AdventureFAN's Font change, I thought it was pretty cool that you could do this.
So I went with a more classy, novel/book feel font that happens to be my personal favorite and I use in my own chat conversations: Book Antiqua Bold.

The pack does:
- All standard alphanumeric characters
- Most French characters
- Most Spanish characters, especially El Nino
- Maintains Cyan's Bushido Kanji

However, in the opening scene, there is some clipping when the credits start playing, I am not 100% sure how to fix it. If anyone can assist me with this, that would be appreciated.

https://www.dropbox.com/s/xxvnqaflrssynkc/Arial-Bold.ttf?dl=0
I uploaded it to my Dropbox for the time being.

- Download this file and save it anywhere.
- Copy the Arial-Bold.ttf file inside your Final Fantasy VI/obb/font (To quickly access this folder, Final Fantasy VI Properties > Browse Local Files)
- Replace the Arial-Bold.tff inside this directory with the one you downloaded.
- Start up the game. If done correctly, your main menu should have your font changed correctly.

https://www.youtube.com/watch?v=td8BUkDnO0I
A video with my fight with Behemoth King both forms, shows the Main Menu UI, in game battles and internal menus with the font. It also includes Dialogue before and after the battle to get a feel to what it looks like.