Mefis, the Jailer
Mefis, the Jailer is a level 130 members monster found in Misthalin, with 150,000 life points. It is weak to water spells. It is the top source of Crystal chaos, Living remnants and Zamorakian sigil.
“Controls the jail block.”
Level 130MembersAggressiveAttacks with melee
Updated . Stats and drops from the RuneScape Wiki's monster and drop data (CC BY-NC-SA 3.0), checked 2026-10-09. Wiki page. Item sprites © Jagex.
Combat stats
- Combat level
- 130
- Life points
- 150,000
- Combat XP per kill
- 7,500
- Max hit
- 1,396
- Armour
- 2,458
- Attack style
- Melee
- Weakness
- Water
- Immune to
- Stuns
- Aggressive
- Yes
- Poisonous
- No
Slayer
- Slayer level
- None needed
- Assigned by
- Not a Slayer task
Where
Misthalin
Ironman notes
- Weak to water spells: bring that style for faster kills.
- Immune to stuns.
- Aggressive: it attacks on sight, which is handy for AFK kills once your gear outclasses it.
- Always drops Bones: Prayer XP as you go.
Best for
Best drop rate anywhere
Of every monster that drops these, this one gives the most per kill.
- Crystal chaos1/500
- Living remnants1/500
- Zamorakian sigil1/500
Drops (12)
| Item | Quantity | Rarity |
|---|---|---|
| Dungeoneering token | 500, 5000 | Always |
| Bones#2 rate | 1 | Always |
| Onyx dust | 20–40 | 1/160 |
| Hydrix bolt tips | 40–60 | 1/400 |
| Sliver of pain#2 rate | 4–6 | 1/100 |
| Sliver of power#2 rate | 4–6 | 1/100 |
| Sliver of strength#2 rate | 4–6 | 1/100 |
| Sealed clue scroll (elite) | 1 | 1/36 |
| Sirenic scale | 1–3 | 1/200 |
| Crystal chaosBest rate | 1 | 1/500 |
| Living remnantsBest rate | 1 | 1/500 |
| Zamorakian sigilBest rate | 1 | 1/500 |
Most common first. “Best rate” and “#2/#3 rate” compare expected drops per kill with every other monster that drops the item.