Raid bosses are the only way to add Bellanoir, Blazamut Ryu, Xenolord, Moon Lord, and Hartalis to your collection. You cannot catch any of them. Instead you summon each one from a crafted Slab, beat it before the timer runs out, and collect an egg that hatches a normal, usable version of that Pal. The fastest path to owning every raid Pal is to stop building a separate team for each fight and instead breed one army strong enough for Xenolord, then feed it slabs.
Quick answer: Build a Summoning Altar (Technology Level 33), craft each boss Slab from 4 Slab Fragments at an Assembly Line, place the Slab in the altar, and defeat the boss inside the 10-minute limit. The egg it drops hatches the Pal, with a roughly 10% chance of an Alpha. One team bred for Xenolord clears every other raid, including the Level 80 Ultra versions.
How slabs and the Summoning Altar work
Three things drive every raid. The Summoning Altar unlocks in the Ancient Technology column at Technology Level 33 for 3 Ancient Technology Points and is cheap to build from stone and Paldium. Each boss has its own Slab, made from 4 Slab Fragments at an Assembly Line. You need at least one fragment in your inventory before the Slab recipe appears.
The rule that catches new raiders out is consumption. Both the Slab and the altar are destroyed by the fight, so a farming session needs a stack of stone and Paldium ready to rebuild altars between summons. When you place a Slab, you choose where to fight, either at your own base or teleported to the dedicated Raid Area. The Raid Area keeps splash damage away from your production base, so use it. Bring materials for a Remote Palbox Device if you fight there.
The fight itself follows fixed rules. A 10-minute timer runs the whole time, the boss cannot be captured, and your own death does not fail the raid. You only lose if the timer expires or your Pal Box is destroyed. The boss always targets whoever deals the most damage, which means your strongest attacker is also your tank.
Every raid boss, level, and weakness
There are six bosses spread across eleven encounters once Ultra and Master variants are counted. The 1.0 launch retuned the Ultra tier to Level 80 with multi-million HP pools. Defeat, not capture, is how you obtain the Pal, and Ultra variants drop the same eggs as their standard versions.
| Boss | Level | HP | Element / weakness |
|---|---|---|---|
| Bellanoir | 30 | 300,000 | Dark, weak to Dragon |
| Bellanoir Libero | 50 | 450,000 (+heal phase) | Dark to Ice, weak to Dragon then Fire |
| Bellanoir Libero (Ultra) | 80 | 2,394,000 | Dark to Ice |
| Blazamut Ryu | 55 | 512,680 | Fire/Dragon to Electric |
| Blazamut Ryu (Ultra) | 80 | 2,550,000 | Fire/Dragon to Electric |
| Xenolord | 65 | 1,414,000 | Dark / Dragon |
| Xenolord (Ultra) | 80 | 2,562,000 | Dark / Dragon |
| Moon Lord | 50 | 422,500 | Crossover boss |
| Moon Lord (Master) | 80 | 2,352,000 | Crossover boss |
| Hartalis | 70 | 972,000 | Water/Grass, then Neutral |
| Hartalis (Ultra) | 80 | Highest tier | Water/Grass, then Neutral |
Where to farm Slab Fragments
Slab Fragments come from treasure and dungeon chests, and the fight tier scales with the chest level. Bellanoir’s fragments start appearing from around Level 19 chests, which is why the entry raid is the first one most players can farm. Fragments for Bellanoir Libero and the later bosses sit in high-level dungeons and drop from dungeon bosses.
Once you clear a standard boss, you do not need to farm chests for its harder version. Defeating Blazamut Ryu, Xenolord, and Hartalis drops the Slab for their Ultra fight, and Moon Lord drops its Master Slab. The exception is the Bellanoir line, which has no Ultra fight from the base boss. This makes the standard versions your slab factory for the Level 80 tier.
Build one army for every raid
The efficient path is a single team, not five. An army bred and leveled for Xenolord, the hardest standard fight, also clears Blazamut Ryu, Bellanoir Libero, and their Ultra variants with no boss-specific counters. Build it once and farm everything.
The universal core is a player-damage carry matched to the boss element, backed by 4 Gobfins for the gun-damage multiplier. The alternative Pal-damage core is 2 Knocklem plus 3 Dumud, rotating the Knocklems for full Partner Skill uptime. Everyone should be at or near the Level 80 cap and running properly bred passives and IVs before you start on the Level 80 Ultras. The loot loops back into itself, since IV Fruits from the early raids fund the breeding that clears the later ones.
Per-boss strategies
Bellanoir and Bellanoir Libero
The entry raid summons at Level 30 but hits above its level, so wait until around Level 40 to 45 before trying. Bellanoir is a Dark caster, so Dragons rule the fight. Astegon quad-resists its attacks and tanks well, with Orserk, Jormuntide, and Jormuntide Ignis as strong damage. Ride a Chillet to infuse your attacks with Dragon element, stack it with Gobfin Partner Skills, and fire a Rocket Launcher. Run straight away from Nightmare Ray, which tracks sideways, and expect Apocalypse to punish your base Pals. Bellanoir Libero is the Level 50 upgrade, with a floating hitbox that dodges many attacks and a phase where it heals about a third of its HP. Seed Mine and Flare Storm connect reliably, and Beam Slicer and Flame Funnel top the damage. Bellanoir’s egg hatches female roughly 90% of the time.
Blazamut Ryu
Blazamut Ryu opens as a straight Fire burn, then at 10% HP it heals 30% and swaps to Electric, unlocking new attacks. Budget your timer for that second wind, since it effectively extends the HP bar. It also resists status effects more as the fight goes on, so stuns become rare. The player-damage build swaps with the phases, using Azurobe in phase one for its Electric attack bonus, then Anubis or Gildane after the swap, with 4 Gobfins throughout. The Pal-damage build runs 2 Knocklem plus 3 Dumud.
Xenolord
The Dark and Dragon invader defines your endgame team. It rains meteors and beams while summoning waves of Xenogard and Xenovader, so split your plan. Fight from the air on a flying mount to dodge the comets, Blast Cannon, Omega Laser, and Beam Slash, and bring an add-clear crew of around six Pals with Meteorain. Ice and Dragon counter its typing, so Frostallion with 4 Gobfins is the classic player-damage core, while freshly bred Pals with Holy Burst or Absolute Frost carry the Pal-damage version. Watch Beam Slicer, which deals triple damage to flying targets and can one-shot your mount, so keep moving.
Moon Lord
The Terraria crossover is not a Pal. It is a Level 50 boss with heavy AoE that spawns three True Eyes of Cthulhu mid-fight. Damage only counts through its eyes and heart, and the normal version has no damage reduction, which makes it the softest target on the roster. The Master version at Level 80 has a 2.35-million HP pool and needs a finished team.
Hartalis
Hartalis is the toughest raid Pal. It opens as a Water and Grass hybrid, where an Electric hitter like Orserk is your best phase-one answer. At zero HP, it transforms into a Neutral second phase, throwing a shockwave you must dodge and raising barriers that only break to Electric, Fire, or Dark damage depending on the phase. Dark hitters like Bellanoir Libero or Selyne finish the job. Its Ultra drops the Crown of Salvation.
What raid bosses drop
Raids are the best repeatable endgame loot loop, and every reward feeds back into future clears.
- The boss egg, which hatches a non-boss version with roughly a 10% chance of an Alpha.
- IV Fruits, the raid-exclusive items that lock a parent’s IVs before breeding.
- Training Manuals for direct Pal XP, plus Training Crystals that only Bellanoir drops.
- Ultra Slabs for the next difficulty from Blazamut Ryu, Xenolord, Hartalis, and Moon Lord Master.
- Ancient Civilization Cores and boss-specific prizes such as the Crown of Salvation from Hartalis (Ultra).
Common mistakes that waste a session
A raid is won by damage output and by not throwing away the clock. Keep these fixed points in mind before each summon.
- Fight in the Raid Area, not your production base, so splash damage does not cost you buildings.
- Pre-craft altars and stock stone and Paldium, since both the Slab and the altar are consumed each fight.
- Never bring a Pal you cannot afford to lose, because the boss focuses your top damage dealer.
- Budget the timer for heal and transform phases on Ryu, Libero, and Hartalis.
- Do not waste time trying to capture the boss. The egg is the prize, so pure damage is the plan.
- Farm the standard versions before Ultras, since they drop the Ultra Slabs anyway.
You know a raid worked when the boss dies inside the timer, and the reward drops appear, including the egg for that Pal. If a fight fails, it is almost always because the 10-minute timer ran out or the Pal Box was destroyed, not because you died. Start with Bellanoir to bank IV Fruits, breed those into a Xenolord-ready army, and you can farm the entire raid roster and the Level 80 Ultras from a single, well-built team.
