Respect Kuja
Kuja destroys the sandstorm surrounding the huge tree that holds Cleyra at it's branches:
Brahne
"Sneaky, little rats!"
"Kuja, what do you think? Surely, with your powers, there must be something you can do."
Kuja
"Of course, Your Majesty. I will present you a marvelous display of my power. I am certain that you will be most pleased."
Quote from FFIX Ultimania Kuja's Timeline:
Heads to Cleyra from Alexandria, using Terran magic, makes the Cleyran Sandstorm vanish.
http://www.youtube.com/watch?v=uUN2_wOguA0
Kuja tanks Bahamut's Mega flare:
http://www.youtube.com/watch?v=OH3Is0k_eqg
Kuja
"Blood..."
"Hahahaha..."
"Excellent, Bahamut!"
"Power, mobility... You are truly the best! You even hurt me...a little."
Kuja, angered by the fact that he's a mortal, destroys his home world Terra:
http://www.youtube.com/watch?v=phnmDrHsMJU
The entry in Japanese Final Fantasy IX Ultimania reads “Tera Daihoukai”, which translated with mechanical literalness means “Great Collapse of Terra” (daihoukai = the kanji from ookiku kuzurekowareru). Which is compatible with Kuja being a planet buster, since houkai means “collapse, crumble, disintegrate” and I found some Japanese sources using it to describe what happened to Alderaan (though less common than the generic hakai).
Mikoto: Kuzya no ano kyoudai na tikara wo mita desyou? Hitotu no sekai wo zibun no tikara dake de hakai sita...
“Did you see that power of Kuja’s? He destroyed one world with only his own power..."
Single Terran buildings easily dwarf even the Invincible, which has a wing span of 200 meters, making them significantly larger than any real human-made structure
http://www.youtube.com/watch?v=N-e1Sg024hg
Kuja's timeline in FFIX Ultimania:
Makes Terra go BOOM, and re-activates the Iifa Tree.