Here is a post which tackles the different bosses in the game Bloodborne. In addition, it will reveal their names, infos, stats and weaknesses.
1. Cleric Beast
3015 HP. Beast. Special Weakness: Serration.
Defenses: 103 Physical, 123 Blunt, 103 Thrust, 103 Blood, 165 Arcane, 50 Fire, 165 Bolt, 999 Slow Poison, 999 Rapid Poison.
2. Father Cascoigne
2031 HP (Human). Special Weakness: None 2031 HP (Beast). Beast. Special Weakness: Serration.
- Defenses (Human): 95 Phys, 95 Blunt, 95 Thrust, 80 Arcane, 95 Blood, 65 Fire, 120 Bolt, 999 S. Poi, 999 R. Poi
- Defenses (Beast): 126 Phys, 126 Blunt, 126 Thrust, 126 Blood, 160 Arcane, 50 Fire, 120 Bolt, 999 S. Poi, 999 R. Poi
3. Blood-starved Beast
3470 HP. Beast. Special Weakness: Serration
Defenses: 108 Phys, 108 Blunt, 108 Thrust, 108 Blood, 160 Arcane, 55 Fire, 160 Bolt, 999 S. Poi, 180 R. Poi
4. Witch of Hemwick
2611 HP (Each) Special Weakness: None
Defenses: 79 Phys, 79 Blunt, 79 Thrust, 79 Blood, 70 Arcane, 73 Fire, 90 Bolt, 200 S. Poi, 180 R. Poi
5. Darkbeast Paarl
4552 HP. Beast. Special Weakness: Serration
Defenses: 120 Phys, 144 Blunt, 120 Thrust, 120 Blood, 75 Arcane, 85 Fire, 300 Bolt, 999 S. Poi, 999 R. Poi
6. Vicar Amelia
5367 HP. Beast. Special Weakness: Serration
Defenses: 113 Phys, 135 Blunt, 113 Thrust, 113 Blood, 160 Arcane, 55 Fire, 160 Bolt, 999 S. Poi, 999 R. Poi
7. Shadow of Yharnam
3645 HP (Sword), 2302 HP (Sword + Candle), 2046 HP (Mace + Fireball). Special Weakness: None
- Defenses (Sword) 89 Phys, 89 Blunt, 89 Thrust, 60 Arcane, 90 Fire 68 Bolt, 200 S. Poi, 180 R. Poi
- Defenses (Sword + Candle) 89 Phys, 89 Blunt, 89 Thrust, 60 Arcane, 100 Fire, 68 Bolt, 200 S. Poi, 180 R. Poi
- Defenses (Mace + Fireball) 89 Phys, 89 Blunt, 89 Thrust, 89 Blood, 160 Arcane, 90 Fire, 160 Bolt, 200 S. Poi, 180 R. Poi
8. Amygdala
6404 HP. Special Weakness: None
Defenses: 128 Phys, 153 Blunt, 128 Thrust, 128 Blood, 70 Arcane, 70 Fire, 70 Bolt, 999 S. Poi, 999 R. Poi
9. Martyr Logarius
9081 HP. Special Weakness: None
Defenses: 133 Physical, 133 Blunt, 133 Thrust, 133 Blood, 290 Arcane, 160 Fire, 180 Bolt, 999 S. Poi, 999 R. Poi
(note: No wonder this guy gives people trouble. Geeze)
10. Rom, The Super Happy Fun Spider
5058 HP. Special Weakness: None
- Defenses: 130 Phys, 130 Blunt, 130 Thrust, 130 Blood, 80 Arcane, 72 Fire, 45 Bolt, 999 S. Poi, 999 R. Poi
- Defenses (Children of Rom): 91 Phys, 91 Blunt, 91 Thrust, 91 Blood, 72 Arcane, *62 Fire, 48 Bolt, 120 S. Poi, 300 R. Poi
11. The One Reborn
10375 HP. Special Weakness: None
Defenses: 135 Phys, 162 Blunt, 135 Thrust, 135 Blood, 290 Arcane, 70 Fire, 40 Bolt, 999 S. Poi, 999 R. Poi
12. Celestial Emissary
2764 HP. Kin. Special Weakness: None
Defenses: 235 Phys, 261 Blunt, 26 Thrust, 131 Blood, 170 Arcane, 60 Fire, 55 Bolt, 300 S. Poi, 180 R. Poi
13. Ebrietas, Daughter of the Cosmos, Hater of Fun
12493 HP. Kin. Special Weakness: None
Defenses: 252 Phys, 336 Blunt, 101 Thrust, 168 Blood, 170 Arcane, 60 Fire, 55 Bolt, 999 S. Poi, 999 R. Poi
14. Micolash, Host of the Nightmare. AKA: Micolas Cage
5250 HP. Special Weakness: Pain.
Defenses: 169 Phys, 134 Blunt, 125 Thrust, 179 Blood, 232 Arcane, 124 Fire, 125 Bolt, 144 S. Poi, 132 R. Poi
Note: Poison will continue to hurt Micolash even after he teleports away.
15. Mergo's Wet Nurse
14081 HP. Special Weakness: None
Defenses: 148 Phys, 177 Blunt, 148 Thrust, 148 Blood, 75 Arcane, 75 Fire, 75 Bolt, 250 S. Poi, 180 R. Poi
Note: This is the weakest boss against Rapid Poison. In fact, in later NG cycles, it WRECKS her.
16. Gehrman, the First Sucker Hunter
14293 HP. Special Weakness: None.
Defenses: 150 Phys, 150 Blunt, 150 Thrust, 150 Blood, 65 Arcane, 70 Fire, 65 Bolt, 999 S. Poi, 999 R. Poi
17. Moon Presence
8909 HP. Special Weakness: None
Defenses: 137 Phys, 137 Blunt, 137 Thrust, 75 Arcane, 75 Fire, 75 Bolt*, 999 S. Poi, 999 R. Poi
Note: The Cannon will instantly stagger this boss, allowing a Visceral Attack. Clawmark / Oedon Writhe + Cannon can expedite this fight greatly.
Note for the bosses above: Their stats ARE modified in the Chalice versions of them, but their weaknesses remain the same (they just might have higher overall defenses). Their HP obviously changes between chalice versions and NG+'s as well.
Quickie Chalice Boss Damage Thing
Undead Giant Weakness: Bolt,Thrust
Watchdog of the Old Lords Beast. Serration Special Weakness. Weakness: Physical, Blood.
Fun Fact: He has 9939 Fire Defense. That's right, Nine-thousand, Nine-hundred and Thirty Nine fire defense. Possible typo in the guide and it should be 999, but... They put it for all of his various spawning forms, so...
Keeper of the Old Lords Weakness: Arcane (Only 30 Def!), Fire
Pthumerian Descendant / Pthumerian Elder Weakness: Arcane, Fire
Forgotten Madman + Escort Weakness: None, really. His lowest defense is 194 (Blood) and 195 (Blunt). The rest are all 200+.
Abhorrent Beast Beast. Special Weakness: Serration. Weakness: Arcane, Fire, S. Poison
Note: He only has 70 S. Poison defense. Very easy to poison.
Bloodletting Beast Beast. Special Weakness: Serration. Weakness: Arcane, Fire
Yharnam, Pthumerian Queen Defenses: Phys 75, Blunt 95, Thrust 75, Blood 75, Arcane 115, Fire 95, Bolt 155, S. Poi 250, R. Poi 270.
HP Increase per Level of Vitality
Stat Tables:
Defense Per Level: