Ostrava, of Boletaria

Ostrava, of Boletaria

Health 5250 482
404 352
404 Bleeding 131
404 Poison 110
404 Plague 20
Location The Nexus
Boletarian Palace
Drops 550 Souls
Rune Shield
Rune Sword
Mausoleum Key

Ostrava, of Boletaria is an NPC in Demon's Souls and Demon's Souls Remake. NPCs are the various characters that are encountered by the player throughout their journey. NPCs provide information, others are quest givers, while some are categorized as Merchants and/or Blacksmiths whom you can trade with or request for certain services.


Ostrava of Boletaria is the Prince of Boletaria, whose real name is Ariona Allant. He is one of the earliest encountered NPCs in the game, and most frequently-encountered through the entirety of World 1. Ostrava seeks council with his father, the King, but quickly learns of the demonic farce that now sits on the throne.

Overcome with grief and betrayal, Ostrava kills himself at the foot of his father’s palace, offering his belongings up to you. Through various conversations the player can have with Ostrava in the game, he reveals that the mighty Twin Fang Vallarfax ventured back through the fissure into Boletaria after warning the world.

This might be considered an inconsistency, or an error on the part of the developers: Ostrava actually says that Biorr was the one who escaped through the fissure and that Vallarfax was never seen again, when in fact you see first-hand that it is the other way around. Depending on your interpretation this can change your opinion on the state of Vallarfax’s existence.


Ostrava, of Boletaria Information

  • Drops the Mausoleum Key if he dies due to the player or enemy before he turns into a black phantom. This opens the door behind the Red Eye Knight in Boletarian Palace, where you may find Demonbrandt and Old King Doran. If he dies in an inaccessible place, or falls off of the world to his death, simply go to his spawn point in the current stage and load the game. The Mausoleum Key will be waiting for the player to pick up. If the player does not pick up his items on the next load, however, the items will be gone permanently.
  • A bug might occur in which, if he dies in Boletarian Palace after Phalanx is killed, he will reappear in Phalanx Archstone to be rescued.
  • Appears as a Black Phantom enemy in Penetrator Archstone just before fighting the Penetrator Archstone boss, regardless if the player helped him or not earlier.

Fighting him as a Black Phantom is mandatory. You may also choose to fight him in human form.

  • He is one of the assassination targets from Mephistopheles, earning you a Talisman of Beasts as reward from her when you succeed.
  • When you talk to him at the end of Penetrator Archstone, he spontaneously dies afterward. If you wish to kill him for Mephistopheles, you must kill him BEFORE talking to him in Penetrator Archstone. Otherwise, you will not get credit for the kill and will not receive your payment from Mephistopheles. (NOTE: while you won't get the reward for killing Ostrava, Mephistopheles will still ask you to kill the next victim and you can still get the Foe's Ring)
  • He can appear and die to enemies in Boletaria, and if you don't notice you lose his dropped key forever. For this reason many people choose to kill him earlier when they encounter him, just to be sure to get the Mausoleum Key.
  • When fighting him, his Rune Sword will do a large amount of Magic damage component, so be prepared with good Magic defense and a Dark or Dark Silver Shield. His own Magic defense is also pretty good from his Rune Shield, so try using Fire attacks instead of Magic.
  • When you fight him as a Black Phantom on a narrow platform in Penetrator Archstone he will drop both his Rune Sword and Rune Shield when killed. If you want these items from his corpse, you need to be careful — use a thrusting weapon or one which will not knock him off the edge and lose the items. An alternative strategy is to lead him down the stairs instead of engaging him on the bridge. It is much safer here and not only will you not lose his corpse to a fall, but you will be sure not to fall off yourself. (Note: You can get these items in Fool's Idol Archstone).
  • In the North American version, BP Ostrava will fight Biorr if you lead him out of the castle and Biorr attacks him. It's not clear whether this is World Tendency or Character Tendency related, or just a glitch that got fixed. Note that Ostrava's damage, although not as much as Biorr's, is still fairly high, so if Biorr is severely weakened from the dragon fight, Ostrava may win.

He appears in three places in Boletaria asking for your help against enemies, so in a way he proceeds through the level as you do.


Ostrava, of Boletaria Location: Where to Find Ostrava, of Boletaria

All of Ostrava Encounters are listed below:


Ostrava, of Boletaria Strategies

Co-op with Biorr

  • Kill the Blue Dragon quickly enough to save Biorr. After the dragon is dead get Black Phantom Ostrava to notice you and make him follow you outside. Biorr will attack Black Phantom Ostrava for massive damage (4-5 hits), but Black Phantom Ostrava will refuse to fight Biorr either turning around and walking slowly or just stand still.


  • Take care, Ostrava's heavy combos are pretty dangerous.

Cheap Melee

  • Black Phantom Ostrava will sometimes roll under pressure in melee combat; this can be used to your advantage if he is fought on the long bridge where he spawns. Dealing adequate damage in melee while the player and Ostrava are facing in nearly any direction not parallel to the bridge has the potential to cause him to roll to his doom. Be wary, however, as this can sometimes result in his armaments not spawning properly on load.

Super Cheap Melee

  • In Boletarian Palace after rescuing him, if you attack him he will ask you to stop. If you let him walk away and attack him again, he'll ask you to stop again without becoming hostile. You can take advantage of this: backstab him, wait that he walks away and backstab him again. Rinse and repeat until he dies and enjoy your loots. Also works in 1-3 after he is rescued from the knights.


  • Use Poison Cloud as he runs up to you. You can either circle him until he dies or use Fire Spray to speed up said process.


Ranged 1

  • Ostrava will keep up the pressure as long as he still draws breath, so the only reliable ranged strategy requires you to keep backtracking, and depending on whether you killed it, Ostrava may simply die to the Blue Dragon breath while you clear distance.

Ranged 2

  • If you shoot Black Phantom Ostrava from the start of the bridge, he will jog in a straight line for you without holding his shield up. If you stand still and continue to shoot him with arrows, it is possible to kill him before he gets into melee range in a New Game.

Cheap Ranged

  • Equip the Thief's Ring and stand just on the red carpet at the top of the stairs near the start of the bridge, scope in with your bow and fire a shot at him from there. If you remain still, he'll run at you, but as soon as he gets halfway across the bridge he'll turn around and walk back to his post. At this point you can fire at him again and wait for him to run halfway then return to his post again. Repeat until dead.


Ostrava, of Boletaria Dialogue

First encounter (Boletarian Palace)

  • That was a bold jump! A surprise indeed!
    Well, now that you are here, pray thee, fend off these dreglings.

First encounter (Boletarian Palace, approached from below)

  • Please! Help me! I'm trapped; surrounded by dreglings!

After rescue

  • My thanks for your brave rescue.
    I am Ostrava of Boletaria. Accept this as a token of my gratitude.
    Now, I must go. There is something for me to take care of.
  • No matter how far I venture, only the soul starved remain.
    Is there a single sane person left in Boletaria?

Nexus after rescue (Boletarian Palace)

  • At its peak, Boletaria was a grand kingdom.
    The king, his knights and his subjects were modest and plain, but also steadfast and compassionate.
    In the distant southern kingdom, Boletaria was known as paradise on earth.
    But look at what has become of us now!
    I refuse to believe that this is what Father wished for our great land…

Second encounter (Tower Knight Archstone, behind the gate)

  • Hello! You yonder! Over here! It's me, Ostrava!
    Look at me, again surrounded by evil warriors.
    Could you, perhaps, help me one last time?
    Clear out the soldiers at the far end of this passage, if it pleases you.
    The Lord's Path, just down yonder, has degenerated into a feeding ground for flying dragons.
    Have your wits about you.

After rescue

  • Thank you. That makes twice.
    Thanks to you, I can now forge ahead.
    This is a token of my gratitude. Please accept it.
  • This is bad… Not a single person left… Why on Earth?
    How did all of this happen… Father!"


Nexus after rescue (Tower Knight Archstone)

  • Here in Boletaria, we speak of the legend of The Two swords and the Last Hero.
    The Two Swords, are Demonbrandt and Soulbrandt.
    One sword banishes that which befouls man, and the other banishes man himself.
    The Last Hero is Old King Doran.
    King Doran is the everlasting one, founder of Boletaria and protector of the Two Swords.
    Hah hah, of course, only according to legend!
    But in the dark state of our land, legends are all we can depend upon…

Third encounter (Tower Knight Archstone, behind the gate)

  • Help! Helppp! Soul-starved soldiers are after me!
    In the name of all that is sacred, please open this gate!
    Oh lord, hurry, please! They are almost upon me!

When opening gate

  • Thank you for rescuing me.

Talking to him in alley before killing soldiers

  • A dead-end? No! Help Me!
    I'll never make it! I'll be killed!

After rescue

  • You saved my life. This is the third time. I am truly indebted to you.
    This is… all I have, but please accept it.
    Now, I must go. My father the King awaits me just over there.

Nexus after rescue (Tower Knight Archstone)

  • King Allant led Boletaria with a round table of brave knights.
    The royal Twin Fangs, Vallarfax and Biorr,
    Alfred, the knight of the tower,
    Metas, the knight of the lance,
    and the brave tribesman, Long Bow Oolan and his fearsome legions.
    But today, Boletaria is an abysmal mess.
    Vallarfax was lost and Biorr slipped through the fissure, never to be heard from again.
    All the rest, along with Boletaria, have been devoured by the fog, and will soon be prey for the Demons.
    The Boletarian knights are no longer.
    But perhaps our age will see the rise of new heroes, such as yourself.

Fourth encounter (Penetrator Archstone)

  • Oh, it's you, is it?
    My father is up above. Well, what's left of him, anyway.
    He's transformed into a fiendish Demon.
    I began this quest in a search for truth, but it seems I was a fool to even try.
    Please kill my father.
    In his degenerated state, he can only bring peril to the lands.
    This key… fits the Boletaria mausoleum.
    Inside the mausoleum are my father's two swords, Soulbrandt and Demonbrandt.
    Use them to bring an end to this madness.


Ostrava, of Boletaria Notes, Tips, and Trivia



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    • Anonymous

      12 Sep 2021 19:07  

      Anybody know what happens if you save him on the lord's path after you've already completed 1-3. Where does be appear afterwards?

      • Anonymous

        10 Jul 2021 14:50  

        Actually a great npc tbh. It’s also kinda eerie when you realise you saved his life 3 times in Boletaria but in the final encounter you do the opposite. You defeat his black phantom form which frees him from the curse that binds the souls of travellers into slavery and by doing so you grant him true death in a heroic way. Honestly fits the games bleak atmosphere flawlessly.

        • Anonymous

          23 Mar 2021 23:07  

          Watched him get locked in a corner by the blue knight in 1-1 and die like a little *****, sorry Ostrava, no storyline for you this NG

          • Anonymous

            21 Feb 2021 15:19  

            What happens in 1-3 if YOU die while trying to save him? I pulled the lever and tried to save him but died during the process, he had more than half health as i faded to the respawn screen.

            • Anonymous

              09 Feb 2021 09:57  

              What was this guy thinking venturing into Boletaria? Dude sucks and constantly needs to be rescued. He should have taken up Bocce Ball instead of a sword...

              I blame the parents.

              • Anonymous

                10 Jan 2021 15:08  

                Just found the mausoleum key sitting on the nexus perch where he would sit.. just completed valley of defilement area. why did that happen?

                • Anonymous

                  18 Dec 2020 11:41  

                  if you save him from 1-1 but died,is he still can be killed?.. his HP stays with the amount of he left before dying or goes full health after every time you died?

                  • Anonymous

                    05 Dec 2020 17:19  

                    I just saved him in 1-3 and went through the gates to kill the red knights and now I can't find him. Where does he spawn if I exit the level?

                    • Anonymous

                      02 Dec 2020 14:01  

                      Can he be saved in 1-3 after I cleared that area (Gate is Open) or do I have to wait for NG+ to get the key?

                      • Anonymous

                        27 Nov 2020 19:26  

                        This NPC sucks.... 1-3 area where you have to save him from the two knights. I hit the lever and prepare to save him, and hes like glitches somewhere else. The two knights are literally nowhere, but I see his health bar going down hard. He dies. And I search through the level in its entirety twice over with the friend phantom. There's no body to be found.

                        Im pissed, so I go back to try and find the body for the key. And the two knights are there at the top of the steps, but he's not there.... Again looked all throughout the level and his corpse is nowhere to be found. Now im screwed out of the key. WTF!

                        • Anonymous

                          21 Nov 2020 02:57  

                          So I assume if the red eye knights kill you after you open that shortcut he 'dies', right?

                          Boy, its easy to see why From's design philosophies have changed over the years. That was some utter garbage.

                          • Anonymous

                            21 Oct 2020 17:24  

                            Anyone knows what happens if you do not rescue him anywhere, then you see his black phantom but you do not attack him ? Does Ostrava disappear after his black phantom spawns ?

                            • Anonymous

                              08 Sep 2020 08:58  

                              this idiot fell and got himself killed in the Third encounter (Tower Knight Archstone) and i cant seem to find his spawn point... can anyone tell me please?

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