Pokémon Quest Miasma Moor Secret Boss: How to Find and Get Muk

The secret boss of Miasma Moor (Area 8) in Pokémon Quest is Muk, which randomly replaces the standard Gengar encounter at the end of Stage 8-Boss. Defeating Muk in battle does not recruit it to your roster. To add Muk to your team, you must cook Sludge Soup a la Cube at base camp to attract Grimer, then level it to 38 to trigger its evolution.

How to Encounter the Secret Boss in Stage 8-Boss

In standard runs of Stage 8-Boss, Wave 4 spawns Gengar alongside Gastly and Haunter. Muk spawns purely through randomized stage generation seeds rather than specific team compositions or clear-speed requirements.

• Visual cue: When Wave 4 starts, the arena spawns toxic sludge pools and high-health Grimer adds instead of Gengar's purple teleport effects.
• Stage bonus: Miasma Moor grants an expedition stat bonus to Psychic-type Pokémon. Running fast Psychic-type attackers such as Kadabra or Alakazam speeds up wave clears, allowing you to reset and cycle expeditions quickly until Muk spawns.

How to Beat Muk in Miasma Moor

Muk relies on area-of-effect (AoE) poison puddles and close-range physical slams.

1. Buff immediately: Trigger a team defensive buff (such as Bulk Up or Acid Armor) right before engaging Wave 4.
2. Clear the adds: Use ranged AoE skills to burst down the supporting Grimer minions before focusing on Muk.
3. Dodge poison pools: Muk telegraphs its sludge attacks with a distinct wind-up animation. Tap the Scatter button immediately when this animation starts to pull melee teammates away from ground hazards.
4. Pin the boss: Push Muk toward the arena boundary with ranged attacks to avoid getting cornered by damage-over-time puddles.

How to Attract and Evolve Muk

Because expedition bosses cannot be caught in combat, you must befriend Grimer through cooking and evolve it into Muk at Level 38. Grimer is attracted by Sludge Soup a la Cube, the Poison-type recipe.

Sludge Soup a la Cube Recipes

Cooking Pot Selection

Always use the highest-tier cooking pot available. While basic pots are inexpensive during the mid-game, Pokémon summoned via the Gold Cooking Pot gain an innate bonus of +300 to +400 base HP and Attack. This base stat boost is essential if you plan to use Muk in late-game stages like Happenstance Island.

Best Muk Team Build

Muk functions as a dedicated defensive buffer, using naturally high HP and defensive buffs to protect fragile glass cannons like Alakazam or Starmie.

Move and Move Stone Setup

Target a Grimer that has one move slot rather than two. A single move slot allows you to equip three Move Stones to one skill.

• Primary Move: Acid Armor (learned via Move Learning training).
• Move Stones: 3 Share Stones. This configuration shares 75% of Muk's Defense boost with both teammates.
• Alternative Offensive Move: If your team already has a dedicated buffer using Bulk Up, run Sludge Bomb equipped with 1 Broad Stone and 2 Wait Less Stones to spread poison hazards across enemy groups.

Power Stones and Hit Healing

• Socket Balance: Aim for 5 to 6 HP sockets and 3 to 4 Attack sockets.
• Secondary Stats: Prioritize the Hit Healing secondary stat on your Power Stones until reaching the 10.0% hard cap. With capped Hit Healing, Muk restores its health bar through normal attacks while maintaining team-wide defensive buffs.

Preferred Bingo Bonuses

Check your Grimer’s bingo lines before committing training resources:

• Slot 1: Poison-Type Move Wait Time -5% (or Status Condition Resistance +10%)
• Slot 2: Poison-Type Move Wait Time -10% (or Resistance to Knockback +10%)
• Slot 3: Healing from K.O. +10% (or Poison-Type Move Damage +20% for offensive builds)