I was thinking about what would happen if FFVI got another remake or if they decided to patch in some DLC for the Pixel Remasters. I really loved the extra espers and Dragon's Den stuff which I would love to see again. But I started thinking about new content to add in and thought of three potential Superbosses I would like to see in some future iteration.

General Leo ~ You can challenge Leo's Ghost at his grave site and battle the strongest Imperial warrior. He attacks four times and ignores defense but his attacks are unfocused. He takes half damage from physical base attacks that don't ignore defense and he has a chance o no-sell elemental magic due to his Aegis Shield. He can also use his Shock attack that does high magical damage o the party. He can only be faced in the WoB before the Floating Continent. Beating him nets you Leo's Sword Key Item, and if it were me, having this item in your inventory would allow you the option to control your character's in the Dragon Neck Colosseum.

Emperor Gestalh ~ You may challenge his ghost in Owzer's Mansion by looking at his portrait after you beat Chaddernook. The Emperor is a magic based opponent who uses high level magic and can double cast every turn. If you try to cast reflect on your party, he will use Meteor or Meltdown only and Meltdown will heal him. Defeating him gives you an Econimizer and Gem Box.

Warring Triad ~ This one is a bit more complicated. After earning the Crusader Magicite and then completing the Dragon Den optional dungeon with Kaiser, you unlock the option to use the Crusader Magicite to challenge the Warring Triad, where you will face all three at the same time. They will have better stats of course and be balanced to offset fighting all three a the same time. Still, they will be the most challenging battle in the game. Defeating them lifts the friendly fire of the Crusader Magicite.