Orphan of Kos

General Info
hp.jpg blood_echoes.jpg Location Drops
19,217 60,000 Fishing Hamlet Coast Kos Parasite
physical_DEF.jpg VS_blunt.jpg VS_thrust.jpg --
183 183 183 --
blood_DEF.jpg arcane_DEF.jpg fire_atk.jpg bolt_DEF.jpg
183 274 205 228
slow_poison_RES.jpg rapid_poison_RES.jpg VS_beasts.jpg VS_kin.jpg
999 999 No No

Orphan of Kos is a Great One Boss in Bloodborne. It was added with The Old Hunters DLC. He is the son of Kos.

"Mercy for the poor wizened child, mercy."

Orphan of Kos General Information

The boss will not be visible before or while entering the boss room, only after the initial cutscene will the boss be present, back turned to the player. Orphan will never aggro when entering the boss room, and will only aggro once the player is about 1/3 of the way towards him.
This boss has two noticeable phases:

  • Phase 1:
    • Once engaged, the orphan will turn to the player and attack immediately.
    • Has a significant amount of moves with varying ranges and speeds.
  • Phase 2:
    • The Orphan will bite into the placenta-like weapon and transform.
    • Becomes slightly larger and gains a new set of moves, as well as keeping and enhancing some previous ones.
    • Is far more mobile making it harder to keep track of and stay in control.



  • Fishing Hamlet Coast






  • Stick to his left side (right for you).
    • Mid range will be dangerous and hard to avoid attacks. Hugging his left is the place where you want to be. Circle him while attacking and quickly close any distance when he backs away. The second phase will make it easier as avoiding the jump attack lets you get some free hits in.
  • Parryable in both phases.
  • Augur of Ebrietas works well when he uses his jump attack in the first phase.
  • When he summons electricity by screeching, quickly move to the entrance of the boss arena. Alternatively, look toward the large corpse of Kos, where the bolt of lightning strikes the ground: "waves" of electricity will move outward radially from this point. These "waves" have sharp demarcations and can be rolled through and/or walked/run around.
  • Once he enters the second phase by performing a shockwave, he will stay in the ground for a couple of seconds. This is your chance to backstab him.
    • The Orphan is immune to backstabs during this animation, as well as the lightning attack screech, but timing your charged attack to hit at the very end of said animations can score a backstab
  • The boss area for this fight is large, circular and made up of two parts; the beach and the water.
    • Don't be afraid to go out over the water, as you can't actually fall in and it doesn't slow you down.
    • The beach is sloped and uneven with a few wooden branches sticking out of the ground that you can get stuck on.
    • The water area is flat and even and provides a great amount of space.
      • Eventually, however, you run into an invisible wall that prevents you from going further, so be aware.
  • In phase one, you can easily run under his forward leaping attack and then turn around for an easy backstab, plus a quick follow-up jab before he dodges away. Quickstepping or sprinting will carry you too far to backstab him before he recovers.
  • In phase one, he can be easily staggered by most heavier weapons, or several consecutive hits of a lighter weapons.
    • Be mindful of the stagger since it will reset his animation and he can easily punish you with one of his quicker attacks.
  • In phase one has a very tricky attack which starts off with him reeling back his weapon with one hand a bit and doing a slam while taking a step of two towards the player. This attack can easily be dodges, however, it kicks up some dust from the beach, covering the follow up which is a quick dash towards the player with an uppercut.
  • His aerial dive attack in the first phase can be dodged by timing a dodge straight at him. This will result in you ending up behind him for a free attack with a quick weapon.
  • Dodging this boss in the first phase can be very easy as long as you pay close attention to which attack he is using. A number of his attacks sweep from one side to the other, and dodging properly into the attack can completely avoid any damage. Dodging in the direction the attack is being swung can result in you taking minor damage or the entire damage from the attack depending on whether you'te hit by the weapon or just by the strand attached to it..


General Player Tips (NG+)

  • He becomes extremely tough in NG+
  • Fishing for backstabs with a heavy weapon works best for the first phase (even if you miss the charged r2 will stun it, at least for LHB, making the fishing relatively safe)
  • On both phases, but especially the second, try to keep close to him at all times, using the tactics mentioned in item 5
  • For the second phase, try to fight him on the water (less things to get caught on)
  • For the second phase you may try to fight unlocked, basically circling him with rolls when he's in melee range and attacking on any openings, and just evading his ranged stuff
  • For the second phase, when he flies up to do a slam attack, roll to one side and then the opposite side, it'll usually make him miss
  • For the second phase, when he does the lightning attack it's easier to just get some distance then walk in the gaps between the waves
  • For the second phase, HEAL CONSTANTLY, it's very easy for him to dish out a ton of dmg, killing you very quickly, so try to stay on full health at all times (you can buy more vials later)
  • Due to the above, favour healing over getting a hit in on the second phase (aka play cautiously)
  • Use communion runes, hell eat up your blood vials and you'll need many in the 2nd phase (starting with 27 vials, in the end of the fight I had 3, NG+)
  • Use a clawmark rune, it'll help get you through the first phase quicker and therefore save blood vials
  • For the oath use the hunter of hunters if you can, you'll need the stamina


Parry Guide

Most, if not all, of the melee attacks this boss does can be parried for visceral attacks, even those that involve him jumping. Some attacks are easier to parry, some are almost impossible. Here is a list of the easier ones:

  • In the first phase the easiest to parry is the slow overhead smash. Fire your weapon when he has lifted his leg to ready the heavy attack.
  • When he does a 180 degree clockwise swipe and continues swiping the opposite direction with 180 degree counter clockwise swipe, the second swipe is easy to parry if you staid just far enough to avoid the first swipe without dodging, then fire your weapon when the second swipe is about to start
  • One of the safest parry opportunities is when he screams, shakes his upper body like he is really mad and slams the ground in front of him, pauses for a second and continues with 2 fast swings. The range of those two last swings aren't far and it is pretty safe to shoot immediately after dodging straight back to avoid the first swing. It's tricky to hit but you are safe from any counter attacks.
  • In the second phase there aren't any really safe parry opportunities. The least dangerous one however is fairly easy to spot. Once Orphan calms down and starts to simply walk towards the player staring him/her down, boss is actually preparing one of his short ranged attacks. It really doesn't matter which attack it is going to be, since he always has to move his weapon to his side before an attack. That is the time to fire your gun, once you see his weapon at his side and not in front of him. It is a small window and requires good reflexes but can be done consistently
  • In the first phase the Auger of Ebrietas is a very easy way to get back stab viscerals on him. Particularly during his AoE red burst attack and his quick dash to upper cut. On the dash upper cut dodge into him and you'll be able to fairly consistently get the backstab with the Augur. If you couple this with the Odeon Writh rune you don't even have to expend bullets. This rune also seems to give more bullets in the first half of this fight. (Using oedon write +2, in the first half of the fight, i have gotten a COMPLETE refill from 1-20 bullets on a single visceral. needs confirming)



(( Please respect these video posting guidelines))


Attack Name Attack Description & Counter
Charged spinning attack (1st phase) He will start a fairly slow windup, bringing his weapon to the left of his body before swinging the weapon around twice in a circular overhead swing. If you decide to get close after the first swing he will switch up his attack with the ground vertical attack or the low weapon swing. This attack can be parried
Ground vertical swing (1st phase) He will slam his weapon to the ground before swinging it upward and having it land near the back left side of his body. For this attack, dodge to the left of him as dodging right may inflict the partial damage of the weapon coming back on the landing.
Charged overhead slam (1st phase) He will raise his weapon with both hands over his head and wait near 3 seconds before slamming it down and inflicting a small area off effect physical attack. This attack can be parried
Bomb (1st and 2nd phase) He will pull out slime from his weapon and will plant it in the ground, forming a bomb that explodes with a medium AoE.
Projectile (1st phase) From a range, he will reach into his weapon and throw a ball at the player. This projectile incredible range, decent tracking, explodes on impact or upon reaching wherever your character was. It is recommended to dodge to the side about a second before impact, as the ball turns in flight, but slowly. If it connects, there is a knockdown effect, and Orphan will follow it up with a leaping attack or a vertical swing.
Leaping vertical attack (1st phase) This is his version of a dash. He will jump backwards and slam his weapon hard to the ground to gain some distance away from you. Most of the times he will either follow this up with a charged spinning attack, blood projectile, or may use the time to change into his second form.
Shockwave Once he is around 50% of his health, he will stick his left hand into his weapon and will slam it on the ground, causing a huge shockwave, which will knock you off your feet, but not damage you.
Lightning Waves (2nd phase) He will make a long screech, which will summon waves of lightning, originating at the corpse of Kos, that will travel at a great distance of the boss arena.
Aerial Projectiles (2nd phase) He will fly up in the air, and shoot out multitude of projectiles, which will have shorter range compared to the single projectile he shoots in the first phase.


Notes & Trivia

  • Once slain, attack the black spirit now on top of Kos to get "Nightmare Slain" and complete the DLC.
  • Blood Rapture (visceral attacks restore health) and Oedon Writhe (visceral attacks grant Quicksilver Bullets) runes are enhanced during the first phase. It will restore a far greater amount of health than it should (about four times the amount). Might be a bug.
  • The Plain Doll will have special dialogue after slaying the black spirit of the Orphan of Kos.
  • The first and second forms are NOT kin, so kin related gems do nothing.
  • After defeating the Orphan and slaying the black spirit—the "Sweet Child of Kos"—floating atop the corpse of Kos, the rain will stop and the moon will disappear.
  • His body does not disappear if he is slain via visceral attack in his first form.
    • This is caused by the fact that the first form does not seem to have a death animation or dead state as a whole. You can kill him before going into phase 2 without a visceral attack.
  • There are several snail women at the boss gate worshiping/praying/mourning for Kos.
    • Killing them will not grant you any Blood Echoes.
    • Are treated more as environmental objects, triggering a kill even when rolling through them.
  • The placenta he wields looks a lot like a giant cursed blood gem. This suggest that "Kos" may have been in some way cursed.
  • The Orphan is deeply tied to Gehrman with not only having the dialogue from the Doll, but also having exactly the same cry.




    • 21 Apr 2017 18:26  

      Was a parry fest for me. First phase just spend a good amount of time learning his easily parryable moves and get him down quick and easy (after several hours for me to learn). Second phase is much more difficult to parry but same idea. Learn which ones to do them on and take full advantage of it. And DODGE LEFT especially when he goes nuts, bam-bam ape***** crazy and sneak some hits in when you can

      • 14 Apr 2017 20:45  

        Literally impossible for me. I play as soon as i get home from work till i got to bed (about 5 hours) and have spent 5 days trying to beat this guy and i just cant do it. i cant parry him, i can barely get him into second phase and when i do i cant hit him and he just destroys me. 1000% impossible for me to do. been using LHB +10, tried moonlight sword, tried bow, tried the augur but i cant even back stab him after parry when using that he stands up before i can do anything. This guy alone makes me never want to play this game ever again.

        • 14 Apr 2017 19:22  

          For me, this is hands-down the hardest boss in the entire game, it makes all other boss fights feel pretty easy. it's the only Boss I can't beat. but i will fkn do it some day aargh

          • 29 Mar 2017 18:19  

            Beat him on the first try using Rakuyo. This weapon is godlike, even better than the godlike Beasthunter Saif. I implied the same tactics I was used to with Blades of Mercy and Beasthunter's Saif - dodge to the left (works on like 90% of enemies) and poke. Rakuyo's incredible moveset allowed me to poke with sidestep -> R2 -> L2, and occasionally throw in an L2 spin for increased dmg.
            Overall, he's a chump compared to Ludwig or even Maria.

            • 24 Mar 2017 21:46  

              The only weapon I've been able to use effectively in this fight is the beasthunter saif in transformed state. Its high speed coupled with its distance-closing L1 attack seriously helps with my stamina gauge, which is essential for such a fast-paced fight. (Make sure to equip the Hunter Oath for faster stamina recovery!)

              Oh, and here's something else that saves my ass each time I fight him: try to whittle down his HP to just above halfway, then wait for an opportunity to stagger him and deal a visceral attack, especially if you have a strong clawmark rune equipped. That 50% damage mark is the trigger for his transformation, and if you can knock down his HP to about 40% or less with the visceral, your chances of taking him down will increase manifold. The less time you have to spend with that slippery sod, the better.

              • 23 Mar 2017 19:11  

                I "overleveled" to 50/40/50/50 (vita, endu, force, dex) and was able to defeat him at my first attempt. In my first playthrough i decided to avoid him after dying so many times. Hit him hard in the first phase, then use quick attacks to keep your mobility until the end.

                Fight in the water and flee very far to heal & regen your stamina

                Used LHS, stamina regenerating rune and damage mitigation runes from the main walkthrough (not the chalices ones as i have not found them yet).

                • 22 Mar 2017 21:38  

                  I just did it in a fight against him and he clipped through them and disappeared, forcing me to restart the fight.

                  • 16 Mar 2017 16:48  

                    Just beat this *****. NG+, Simon's Bowblade, combined ranged and closed tactics, +21,5% physical gems. If you learn from your deaths, victory is inevitable. Nice boss to shake up you rusty reflexes.

                    • 06 Feb 2017 07:09  

                      I really really really really, need help with this boss, im in my 60th try and I just cant do it. I'm playing an arcane build, not sure if he's resistant to it. My Psn is saladvodai if you wanna help me. im bl 69 atm

                      • 30 Jan 2017 23:22  

                        And to everyone saying you can parry him in phase 2,
                        [citation *****ing needed]
                        Because I've seen no videos of it and I've unloaded 4 shots into every attack pattern and nothing

                        • 30 Jan 2017 22:32  

                          This boss goes against everything Bloodborne's combat is about. Dodge one attack, get slammed by 3 more and die because he's designed to get into that little recovery period between dodges. Interrupt his attack with your gun, if you can even manage to time it, and he's not slouched to the right to make you miss, you'll still take the full force of the hit because he's retarded fast, get knocked over, and miss the visceral. Get behind him for the backstab, don't get the backstab because you're 1 degree off the angle. This boss is purely based on luck. I don't care how goddamn good you are, you only beat this *****ing *****-faggot-***** because you got a lucky number sequence.

                          • 21 Jan 2017 08:43  

                            Always dodge into him and slightly to his right and this fight will be a cakewalk. I've had more problems with the Celestial Emissaries to be fair - and I beat them on the first try (which is not that hard imo).

                            • 16 Jan 2017 11:54  

                              Lol is this guide serious? YOURE TELLING PEOPLE TO DO A TON OF DUMB STUFF. Also telling people they need 27 vials?! Lmao Only if you suck terribly....Fighting him unlocked in phase 2 is horribly stupid, when ur locked on and he jumps you and easily roll under him. When he does his multiple slam attack on the ground he goes in a circle, if u stand in the middle he will just circle you, missing, while you get a bunch of hits in. People can use stamina runes, clawmark for added visceral and backstab damage or health runes which are all much better options than telling people that Orphan of kos is Soooooo hard you need to spam 27 vials....lmao....Hes not even the hardest fight in the game, give me a break.

                              • 12 Jan 2017 03:43  

                                My video of the Ugly Orphan of Kos.
                                Very good run. 2 strong parries and VAs and a Backstab followed by extra damage (over slashed by accident).
                                Phase 2 keep the pressure and stick mostly to the Fog Gate! Keep your HP at Full when you mot a momemt to breath.
                                "Phase 3" when the enemy is under 25% it becomes extremely aggressive and will do his massive AoE red Explosions very often. Pray for the best and roll away to heal. Barely made it out of it alive. Only part in the video where I nearly died.

                                • 24 Dec 2016 12:57  

                                  having the guidance rune you get from ludwig and having a high rally weapon (either by blood gem enhancement or just innate high rally, like with the burial blade) helps with staying healthy without giving kos a chance to pull a bull***** combo on you when you try to use a blood vial; at least in my, admittedly, little experience. and of course it never hurts to have a good communion rune.

                                  • 21 Nov 2016 16:52  

                                    Finally beat this guy. Packs one helluva punch that's for sure. I just got this game 2 days ago and I love it. I wish it was more active though but that's what happens when a new game in the series comes out the following year ¯\_(ツ)_/¯

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