Every Raid Boss in Palworld: The Summoning Altar and All Eleven Slabs
Raid bosses in Palworld are summoned, not found. You build a Summoning Altar at Technology 33, offer a Slab, and fight what appears. There are eleven of them — five bosses, five Ultra versions and the Terraria crossover — and the number that decides how hard each one is turns out not to be its HP. It is damage reduction, which runs from 0% on Bellanoir to 91.5% on Xenolord Ultra. Read only the HP column and you will badly misjudge which raids you are ready for.
All Eleven Raid Bosses
| Raid | Level | HP | Damage reduction | Attack damage |
|---|---|---|---|---|
| Bellanoir | 35 | 333,000 | 0% | 150% |
| Bellanoir Libero | 45 | 411,000 | 60% | 200% |
| Moon Lord | 50 | 422,500 | 0% | 100% |
| Blazamut Ryu | 55 | 512,680 | 60% | 200% |
| Xenolord | 65 | 1,414,000 | 65% | 500% |
| Hartalis | 70 | 972,000 | 50% | 400% |
| [Master] Moon Lord | 80 | 2,352,000 | 75% | 700% |
| Hartalis (Ultra) | 80 | 1,952,000 | 80% | 1,300% |
| Bellanoir Libero (Ultra) | 80 | 2,394,000 | 91% | 1,000% |
| Blazamut Ryu (Ultra) | 80 | 2,550,000 | 91% | 800% |
| Xenolord (Ultra) | 80 | 2,562,000 | 91.5% | 1,300% |
All five Ultra raids are Level 80, which is why the Level 80 farm rule and these fights belong to the same phase of the game.
The attack-damage column is the one that kills you. A normal Bellanoir hits at 150%; Xenolord Ultra and Hartalis Ultra hit at 1,300% — roughly nine times harder. Survivability gear stops being optional at the Ultra tier, which is where implants like Diamond Body (flinch and knockback immunity) and Immortality start to matter more than raw damage.
Damage Reduction Is the Real Curve
Divide each boss's HP by the damage that actually gets through, and the ladder looks completely different:
| Raid | HP | Reduction | Effective HP |
|---|---|---|---|
| Bellanoir | 333,000 | 0% | 333,000 |
| Moon Lord | 422,500 | 0% | 422,500 |
| Bellanoir Libero | 411,000 | 60% | ≈1,028,000 |
| Blazamut Ryu | 512,680 | 60% | ≈1,282,000 |
| Hartalis | 972,000 | 50% | ≈1,944,000 |
| Xenolord | 1,414,000 | 65% | ≈4,040,000 |
| [Master] Moon Lord | 2,352,000 | 75% | ≈9,408,000 |
| Hartalis (Ultra) | 1,952,000 | 80% | ≈9,760,000 |
| Bellanoir Libero (Ultra) | 2,394,000 | 91% | ≈26,600,000 |
| Blazamut Ryu (Ultra) | 2,550,000 | 91% | ≈28,333,000 |
| Xenolord (Ultra) | 2,562,000 | 91.5% | ≈30,141,000 |
(Effective HP here is simply HP ÷ the fraction of damage that lands — 2,562,000 ÷ 0.085 for Xenolord Ultra. It is a way to compare fights, not an in-game statistic.)
Raw HP climbs 7.7× from the easiest raid to the hardest. Effective HP climbs about 90×. That gap is entirely damage reduction, and it is why an Ultra raid can feel impossible even when your damage numbers look fine — at 91.5% reduction you are landing one twelfth of what you hit for.
The practical consequence: percentage damage buffs are worth far more than flat ones at the top. A type converter giving the right element against a 2× weakness doubles what gets through the reduction; a slightly better weapon does not. Bring matchup, not gear.
And it explains why raids are group content. Thirty million effective HP is not a solo damage budget in a reasonable session.
The Slab Economy
| Summoning Altar | Technology 33 — Stone ×100, Paldium Fragment ×20 |
| Limit | One per base camp, and it cannot be placed inside a raid boss area |
| Altar HP | 10,000 |
| Every slab | 4 Slab Fragments of that boss, at the High Quality Workbench or above |
The altar itself is cheap and early. A hundred stone and twenty Paldium at Technology 33 is nothing — the gate on raiding is never the building, it is the fragments.
Four fragments per slab is the number to plan around. Fragments come from Pal Expedition Station runs and, less obviously, from the Arrogant Pal Critic, which hands over a Bellanoir's Slab Fragment for showing it a Kitsun, a Reptyro or a Sekhmet — three separate trades, plus a Blazamut Ryu fragment for Warsect Terra and a Xenolord fragment for Omascul. Those five trades are the fastest non-expedition route to a summon.
Ultra slabs use their own separate fragments, so stockpiling normal Bellanoir Libero fragments does nothing toward the Ultra version. They are parallel currencies, not a ladder.
The Terraria bosses work the same way through a different item. The Celestial Sigil, made from Hallowed Bar, is offered at the same altar to summon the Tides of Terraria encounters, with a Celestial Sigil [Master] for the Level 80 version.
Level Order Is Not Difficulty Order
Hartalis is Level 70 and easier than Xenolord at Level 65. Hartalis has 972,000 HP behind 50% reduction — about 1.9 million effective. Xenolord has 1,414,000 behind 65% — about 4.0 million effective, more than twice as much, five levels earlier. If you are working up the ladder, do Hartalis before Xenolord regardless of what the levels say.
Moon Lord at Level 50 has 0% damage reduction, the only boss above Level 35 with none. Its 422,500 HP is barely more than Bellanoir's, and it hits at 100% — the lowest attack multiplier of any raid in the game, lower even than Bellanoir's 150%.
That makes Moon Lord by far the most generous raid for its level, and it is worth knowing what it pays out: Luminite Bar for the Legendary Meowmere, and three Applied Handbooks — Planting, Handiwork and Gathering — at 33.3% each. For a fight with no damage reduction, that is the best value on the board.
Remember that Ultra raids drop two handbooks instead of one, at the same 33.3% rate. So the reason to climb to the 91% reduction tier is loot rate, not progression — nothing above requires it.
A suggested order, by effective HP rather than level: Bellanoir → Moon Lord → Bellanoir Libero → Blazamut Ryu → Hartalis → Xenolord → [Master] Moon Lord → Hartalis Ultra → the three 91% Ultras.
Practical tips
- Summoning Altar is Technology 33 for Stone ×100 and Paldium ×20 — one per base camp.
- Every slab costs 4 Slab Fragments; Ultra slabs use separate Ultra fragments.
- Damage reduction, not HP, is the difficulty curve — 0% to 91.5%, a 90× swing in effective HP.
- Do Hartalis (Lv 70) before Xenolord (Lv 65) — it is half the effective HP.
- Moon Lord at Level 50 has 0% reduction and 100% attack — the easiest raid for its level.
- The Arrogant Pal Critic gives five slab fragments for showing it particular Pals.
Running your own Palworld 1.0 server
Raids are the clearest case for a persistent world. Thirty million effective HP on an Ultra is group content by design, and a summon is spent whether or not everyone showed up. On a dedicated Palworld 1.0 server the altar and your fragments stay put between sessions, so a raid happens when the group is assembled rather than when the host happens to be online — and your expeditions keep returning fragments while nobody is playing. Full crossplay lets everyone join from any platform, and one-click backups protect the run.
Conclusion
Palworld has eleven raid encounters, all summoned at a Summoning Altar — Technology 33, Stone ×100 and Paldium Fragment ×20, one per base camp — by offering a Slab built from 4 Slab Fragments. The ladder runs Bellanoir (35) → Bellanoir Libero (45) → Moon Lord (50) → Blazamut Ryu (55) → Xenolord (65) → Hartalis (70), then five Level 80 Ultra versions. The difficulty is carried by damage reduction, not HP: from 0% on Bellanoir and Moon Lord to 91.5% on Xenolord Ultra, which turns 2.5 million HP into roughly 30 million effective — a 90-fold climb against a 7.7-fold climb in raw HP. Two orderings are worth correcting: Hartalis at Level 70 is easier than Xenolord at 65, and Moon Lord at Level 50 has no damage reduction at all while dropping Luminite Bar and three Applied Handbooks, making it the best-value fight on the board.
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