Corporeal Beast

Source-reviewed on 1 October 2026 from Sarim's implementation. The running game's build, cache and configuration have not yet been matched to this review.

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NPCCorporeal BeastNormal encounter

Base stats; personal item loot
Details
NPC type	Boss
Location	Corporeal Beast cave
Combat
Hitpoints	2000
Attack	320
Strength	320
Defence	310
Magic	350
Ranged	150
Attack styles	Crush and magic
Maximum hit	51 melee; 65 magic before player modifiers
Attack interval (ticks)	6
Immunities	Poison and venom
Access and rewards
Pet	Pet dark core

Corporeal Beast is a boss with 2,000 base hitpoints and independent item loot for participating players. To qualify for personal item loot, deal positive damage after its weapon resistance and remain in the boss's region until rewards are distributed. The ordinary item rewards are not limited to the highest-damage player.

Getting there

Select Corporeal beast in the boss teleport menu, then use the passage to reach the chamber. Standard teleport restrictions apply, including teleblock, the level-20 Wilderness teleport limit, and restrictions imposed by your current activity.

The external cave entrance rejects entry while teleblocked or recently defending in combat. The cave exit leads to the Wilderness and asks for confirmation. Take care when choosing the exit rather than a teleport.

Combat

Corporeal Beast halves styled player-hit damage unless your weapon is accepted by its weapon check. Sunlight spear and Osmumten's fang are explicit exceptions, as are the fang's ornamented form and Osmumten's scythe. Some weapon categories are also accepted. The weapon-resistance check caps damage at 100 before later hit modifiers.

The boss has a base six-tick attack interval and uses melee plus several magic attacks:

• Melee: a base maximum of 51.
• Basic magic: a base maximum of 65.
• Powered magic: rolls 30–65 damage without Protect from Magic. With that prayer active, it rolls 10–35 and bypasses the ordinary prayer reduction and defence accuracy checks.
• Split magic: initially hits for up to 42, then scatters five impact locations near the target. Standing on an impact location can inflict 15–35 damage, ignoring prayer and defence. More than one impact can strike the same tile.

Dark energy core

When Corp survives a hit of at least 32 damage and no core is active, there is a 1 in 8 chance to spawn a dark energy core. The core jumps near players and drains players within one tile, dealing up to 12 damage per drain and healing Corp by the damage dealt. Move away from its landing position. A poisoned core suppresses its drain in this implementation.

If nobody remains visible to Corp, it checks every three ticks and restores itself. Leaving the chamber can therefore undo progress rather than preserve the fight indefinitely.

Drops

Each eligible contributor receives an independent loot receipt. The table lists every main-table entry, using baseline chances for one ordinary roll with no drop-rate bonuses, extra rolls, reward-set effects or special-mode changes. Chances describe the selected item. Quantities are before item-processing effects; separate coin, pet and other auxiliary rewards are excluded.

Item	Quantity	Baseline chance
Adamant arrow	750	1/33
Runite bolts	250	1/33
Mystic air staff	1	1/66
Mystic water staff	1	1/66
Mystic earth staff	1	1/66
Mystic fire staff	1	1/66
Mystic robe top (blue)	1	1/75
Mystic robe bottom (blue)	1	1/75
Onyx bolts (e)	175	1/112
Cannonball	2,000	1/112
Spirit shield	1	1/112
Arcane sigil	1	1/963
Spectral sigil	1	1/963
Divine sigil	1	1/2890
Core spirit	1	1/963
Elysian sigil	1	1/1445
Pure essence	2,500	1/23
Law rune	250	1/23
Cosmic rune	500	1/35
Death rune	300	1/35
Soul rune	250	1/35
Adamantite ore	125	1/3
Runite ore	20	1/39
Adamantite bar	35	1/39
Teak plank	100	1/76
Mahogany logs	150	1/76
Magic logs	75	1/63
Green dragonhide	100	1/63
Watermelon seed	24	1/44
Raw shark	70	1/44
White berries	120	1/44
Desert goat horn	120	1/44
Tuna potato	30	1/48
Antidote++(4)	40	1/48
Ranarr seed	10	1/48
Crystal key	1–5	1/73
Holy elixir	1	1/73
Clue scroll (elite)	1	1/73

Additional rewards

The pet dark core has a baseline chance of 1 in 1,001 per pet roll. This pet check belongs to the resolved killer; personal item-loot eligibility does not grant every contributor a pet roll. Pet modifiers and additional pet rolls change that baseline.

Separate bonus-coin rolls can award 500,000 or 2,000,000 coins, 2,000,000 or 5,000,000 coins, and 25,000,000 or 50,000,000 coins without donation benefits. The three rolls are independent of the main table and can succeed together.