|Powers and Abilities|
|Abilities|| Enhanced Strength|
Lasers (altered form)
Elastic tentacles (altered form)
Weather Control (altered form)
Telepathy (altered form)
Energy Control (altered form)
|First Appearance||The Final Battle Part 2 (John Smith 10)|
Diagoneir is a big, black dragon, the size of Ultimate Humungousaur, at about 20 feet tall. The majority of his body is black, with his stomach and the inside of his wings being green. He has a long snout filled with razor sharp teeth.
When using a power to unlock the Diagon's power, Diagoneir can transformed into its Altered State, which appears on Diagon's true form, a humungous Octopus serpent monster.
Powers and Abilities
Diagoneir has enhanced strength and durability, able to take several hits and give them back with ease. He can use his tail to do heavy damage as well. He can shoot fire lasers, and can fly.
He can envelop his body in flames, to increase the powers of ramming into things.
He has a prehensile tail.
In his Altered Form, Diagoneir can shoot lasers from his eyes. He can attack with his tentacles, as well as sever them at will. He has weather control, allowing him create galeing winds. He can release energy pulse waves, and has telepathic powers, able to control others' minds.
Due to Diagon being infused into this form, Diagon will take control of the user if used. Therefore, it is a risk to use as the user cannot stay in control.
His wings are vulnerable, and has been shown to be grounded after an arrow pierced it.
When in Altered Form, his essence is pure energy. This means he can be absorbed.
Dimension 1 (John Smith 10) Appearances
- The Final Battle Part 2 (John Smith 10) (first appearance)
- Keyblade Graveyard (Altered form only)
Dimension 13 (Kingdom Hearts)
Diagoneir is used by Phantom X from the Kingdom Hearts dimension, being his signature alien. His replica uses it as well.
By Phantom X
- Phantom of Twilight (first re-appearance)
- Kairi (episode)
- End of the World Part 2
- End of the World Part 3
- Organization XIII Part 2
By Phantom X Replica
By Phantom X
Dimension 777 (John Smith 10: Final Fantasy)
Dimension 2 (Ryder 10)
Diagoneir is unlocked after accidentally scanning Dragon. He has no ties to Diagon at the beginning, but is influenced by Diagon later.
- Return to Forever Part 2 (Ryder 10) (first appearance)
- Fame (Ryder 10)
- Of Predators and Prey (Ryder 10)
- Lord of Chaos
- Battle of the Omnitrices Part 4
- The Ultimate Enemy Part 2 (Ryder 10) (normal and Altered form)
By 16 year old Ryder
By 17 year old Ryder
Dimension 40 (Ya-Mi-Oh!)
Diagoneir is an alien in the Dueltrix. While not used directly, it is used in fusion aliens.
- Alien C is used by Curtis on rare occasions. When Curtis is 20, he has full control over this form.
- Diagoneir's name is a combination of "Diagon" and "Heir." This is because Diagoneir is the heir or successor of Diagon.
- This name is also a play on the Pokémon name "Dragonair".
- Diagoneir resembles Malchior the dragon from Teen Titans.
- Diagoneir is much more associated with villains and Phantom X than with John.
- Diagoneir's Altered Form is based off the Pokémon Giratina, who has an altered form.