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Demon Boss Souls are special Souls dropped by the final bosses of each area in Demon’s Souls. These Souls can be exchanged for powerful weapons, magic, and miracles.
Each Boss Soul can only be obtained once per playthrough, meaning you will need to beat the game multiple times to obtain every possible reward.
To open up the possibility of using Demon Boss Souls to make new weapons, you must first use the Flamelurker’s Searing Demon’s Soul by giving it to Blacksmith Ed to unlock Advanced Weapon Crafting. Many of these new crafting recipes will require other powerful weapons in addition to the boss soul to create something new – but they can also be given to spellcasting NPCs to learn new spells.
Below is a list of all the Boss Souls in Demon’s Souls. Click on a soul to learn more information on the various uses they can have.
List of Boss Souls
| Boss Soul | Obtained From | Possible Upgrades |
|---|---|---|
| Grey Demon’s Soul | Vanguard Demon | Dozer Axe |
| Lead Demon’s Soul | Phalanx | Scraping Spear |
| Iron Demon’s Soul | Tower Knight | Warding Spell |
| Silver Demon’s Soul | Penetrator | Light Weapon Spell,
Cursed Weapon Spell |
| False King’s Demon’s Soul | Old King Allant | Northern Regalia |
| Hard Demon’s Soul | Armor Spider | Lava Bow,
Fire Spray Spell, Ignite Spell |
| Searing Demon’s Soul | Flamelurker | Advanced Weapon Crafting |
| Dragon Demon’s Soul | Dragon God | Fireball Spell,
Firestorm Spell, God’s Wrath Spell |
| Doll Demon’s Soul | Fool’s Idol | Soul Ray Spell |
| Mixed Demon’s Soul | Maneater | Needle of Eternal Agony |
| Golden Demon’s Soul | Old Monk | Insanity Catalyst,
Homing Soul Arrow Spell, Soul Thirst Spell, Banish Spell |
| Swollen Demon’s Soul | Adjudicator | Meat Cleaver,
Regeneration Spell |
| Hero Demon’s Soul | Old Hero | Large Sword of Searching,
Second Chance Spell |
| Storm Demon’s Soul | Storm King | Morion Blade,
Anti-Magic Field Spell |
| Writhing Demon’s Soul | Leechmonger | Poison Cloud Spell,
Cure Spell |
| Eroded Demon’s Soul | Dirty Colossus | Acid Cloud Spell |
| Pureblood Demon’s Soul | Maiden Astraea | Blueblood Sword,
Death Cloud Spell, Relief Spell, Resurrection Spell |
| Maiden in Black’s Demon’s Soul | Maiden in Black | Soulsucker Spell |
