|Diabo El Caesar|
|Relatives|| Molt Sol Augustus (father)|
|Status|| Alive (anime, manga and light novel)
Deceased (web novel)
|Job(s)||Governor of Alnus|
Diabo is voiced by Yuichiro Umehara
Diabo cares about his sister a lot. He will do anything to be the next heir to the throne because he thinks his brother is just an idiot, which is very true. However, as Piña describes her brother, Diabo tends to overthink things and tends to be paranoid where he once thought that Piña wanted the throne when she had no such interest. Like Pina and Molt, he is one of the most intelligent, realistic and pragmatic member in the family and is shown to be more foresight than the rest of his family due to his overthinking. He is smart enough to know that the JSDF's tremendous power can make Pina to be Empress easily due to her cooperation. Therefore, he tries to get others powerful nations beyond the Gate to even the odd against her sister.
After crossing the gate to prevent Japan from closing the gate, he becomes the one of the persons in the Empire along with Pina to realize that there are far more powerful nations than Japan in other side of the gate in particularly US, China and Russia. However, he prefers to be an ally with Japan since he realizes that the price to be the alliance with superpowers like China, US or Russia is too high due to the fact that he foresees that the Empire will be colonized; the monarchy will be abolished and the natural resources will be stripped mined if one these superpowers came through the gate. As the result, he sees world superpowers behave just like the Empire but in the different way.
Diabo has long blonde hair. He wears clothes of a noble and has an aura of a noble around him.
Diabo has plans to eliminate Zorzal and Piña as competitors by allying himself with someone else beyond the Gate.
He first appears talking to his brother, Zorzal, regarding the throne. When Zorzal claims that he will be the next emperor, Diabo warns him that their father doesn't really trust him.
When Zorzal forcibly took the throne, Diabo was quick to liquidate his holdings and prepare to leave the capital. It was his plan to gather supporters from foreign countries to help him retake the throne.
He eventually found his way to Alnus, where he learned of Japan's plan to close down the Gate due to the catastrophic consequences of leaving a space-time continuum rift open too long. He didn't believe in the seriousness of the situation, thinking it a ruse by Zorzal, despite a goddess confirming of the impending dangers. He conspired with other citzens of Alnus to find a way to prevent that scenario from happening as without the JSDF, Zorzal would be unopposed. They sought to contact the other powers from across the Gate to prevent Japan from shutting it down. As the result, he manages to make a deal with China to delay Japan from closing the gate. During this time, he learns that Japan is not the world superpower and the others nations has far more powerful military than the JSDF.
After the international sabotage of the Gate, his scheme of using China to leverage himself into the throne and stop Zorzal is exposed but he manages to redeem himself and becomes the Governor of Alnus.
Skills & Abilities
- He and Pina are the only person in the Empire that makes contact with world superpower in the other side of the gate.
- In the web novel, he is killed by Chinese agent when the bomb planned near the Gate explodes.