Height / Weight: 171cm / 73kg

Source: Historical facts

Region: Europe

Alignment: Lawful Good

Gender: Male

He usually makes an effort to maintain a gentle tone, but takes on a rather crude tone during dire emergencies.

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A mild-mannered intellectual with a noble bearing.

Though he might seem to treat resignation as a virtue, he is actually determined to "fight them with all that I possess". However, others have a hard time even perceiving that determination of his. Perhaps this stems from the fact that he was the last emperor of his empire, that is to say, a hero who succumbed alongside his state.

"We will perish", "we will lose". He was convinced of this, yet "even so, we have to fight with all that we possess."

To an outsider looking on from the side, this contradictory state of mind would seem a logical matter of course to this man.

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○ Prayer of Hagia Sophia: C-
              Possesses the protection of the cathedral of Hagia Sophia.
                  Unfortunately, it is not expected to be particularly effective in modern times.

○ Twilit Empire: EX
              The last emperor of the Byzantine Empire (the Eastern Roman Empire).
                  Constantine XI was the last emperor of the Roman Empire, and when Constantinople fell to  Mehmed II, the state—all that flowed from Rome—met complete cessation.

○ Quietus Privilege: C
                A variation of the skill Imperial Privilege.
                  Certain skills not originally possessed can be acquired for a short time if the user asserts themselves. As the last emperor, he is not able to possess an extensive selection of privileges, and furthermore, he wastes a great deal of magical energy each time he exercises a privilege.

However, Constantine, who faded away on the battlefield as a mere soldier, is able to bequeath those privileges to others.

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『By These Threefold Walls, I Swear』

Rank: B+
Type: Anti-Army (self)
Range: 1
Maximum Targets: 7000 people

Theodosios Constantinos.

This Noble Phantasm is the pseudo-advent of the threefold walls which marked Constantinople as impregnable.

Although this Noble Phantasm promises to safeguard a vast range, encapturing a maximum of 7000 people, as the number of people increases, the likelihood that it will fall rises, diluting the bestowed protection. Constantine himself considers 1000 people to be the limit if the aim is to actually provide stable defenses.

When summoned by Chaldea, he constructs an even more robust fortification, utilizing his Noble Phantasm on the Master and party alone.

Because he was the last emperor of his empire, he can exert his influence over friend and foe alike, albeit limited to Europeans who lived within approximately 200 years of his own life.

However, the effect rises and lowers according to the profoundity of faith, and it would effectively not apply to someone of a different sect.

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Constantine XI was the last emperor of the Byzantine Empire (the Eastern Roman Empire, which he and his own claimed was the descendant of the Roman Empire).

The Byzantine Empire, once a flourishing capital of trade, saw decline even before the religious conflicts between East and West, and even before the fierce attacks of the Ottoman Empire. By the time Constantine ascended to the throne as emperor, his dominion had already stooped to consist solely of Constantinople and its environs.

From the very moment he became emperor, it was already in such a life-and-death crisis that it could hardly be called an empire anymore.

Constantine XI, great-great-great-great-grandson of Michael VIII—founder of the Palaiologos family—and his family were unable to repair the crumbling palace, and so they narrowly lived on in a small, barely habitable part of the building.

Then, the young sultan, Mehmed II, decided to occupy Constantinople.

He dispatched messengers to seek capitulation, but Constantine XI rejected them outright, and so commenced the hopeless defense of the siege.

Constantine XI sent for reinforcements from neighbouring countries, but few of them dispatched any, and so in the end he went to meet the enemy forces with a meager assembly of soldiers and mercenaries.

That desperate siege, said to have been fought by 10000 to 7000 men, lasted for two months thanks to the threefold walls stemming off the invasion, but even so, they ultimately fell.

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