What does King Slime do as a monsterling?

Equipped on a character, King Slime triggers a link skill: "Using a Special Skill". The skill activates each time the condition is met during combat.

How do I get King Slime?

Tame King Slime in the open world to recruit King Slime. The bestiary entry above lists every spawn location.

Can I fuse King Slime?

Yes — King Slime is a viable fusion ingredient. Combine it with the listed partners to create 1 different monsterling result.

What are King Slime's reinforcement costs?

King Slime reinforces up to level 60. Total cost: 5,025,139 EXP and 25,125,695 gold.

How many variants does King Slime have?

King Slime ships in 5 rarity variants — base ATK/DEF/HP scales from the lowest to the highest tier. The Variants section above lists each one.

Mongil Codex · Monsterling · #16

King Slime

Element Water

Water
Grade 2

King Slime is a rare boss-type Water-element Monsterling. It stands 35.0–40.0 m tall and weighs 200–280 kg. Available in 5 variants: N (1★), N (2★), R (3★), SR (4★), SSR (5★). Base stats range from 23/36/111 ATK/DEF/HP at N to 45/70/222 at SSR. Ability: All teammates' DEF +8.3% for 5s upon attacking Water enemy (Cooldown: 10s) Can be fused with Crimsonjaw to produce Scarlet Queen (20% chance).

Last updated May 2026 · Verified for the latest Mongil: Star Dive build

Last reviewed by Trakan — May 13, 2026

Profile

Height: 35.0–40.0 m
Weight: 200.0–280.0 kg
Companion scale: 0.40×Display size

Link skill

Link skill · Lv. 5 · Water

Using a Special Skill

If the King Slime Monsterling is equipped, it appears when its Appearance Condition is met, jumping toward the enemy with a powerful slam that deals Water DMG and inflicts a Bonus Effect.

[Appearance Condition]
Using a Special Skill

[Appearance Info]
DMG based on equipping character's ATK: 200%
Cooldown: 8s

[Bonus Effect]
30% Movement Speed Reduction (10s)

Damage: 200% · Cooldown: 8s

Chain-link unlocked at level 3.

Stats

Per-level ATK/DEF/HP scaling — and the reinforcement cost to reach each level. Switch rarities to see how the same level lands at higher floors; scrub the slider to see the cumulative EXP, gold, and best-fit feed mix update live.

LevelLv. 60/ 60

HP2,721+2,499 from Lv. 1
ATK818+773 from Lv. 1
DEF1,275+1,205 from Lv. 1

Reinforcement to Lv. 60

Target level: 60Lv.
Cumulative EXP: 3,768,879EXP
Cumulative gold: 25,125,695Gold

Recommended feed mix to reach Lv. 60

Variants

King Slime ships in 5 rarity variants. Each variant scales the same base ATK/DEF/HP curve at different floor values. Use the stats section to scrub the per-level curve for any rarity.

N★23/36/111
N★★26/39/123
R★★★31/46/145
SR★★★★37/57/178
SSR★★★★★45/70/222

Tame from bestiary

Origin monsterKing SlimeOpen bestiary entry →

Merge to create

Fuse King Slime with these partners to produce a new monsterling.

CrimsonjawScarlet Queen20% success

Find on map

Ventus Forest Depths

Dimension spawn: steps 1–50 (boss).

Spawn locationsLocate King Slime on the map1 spawn marker verified in-game

Comments

Guides

In-house guides re-tested every patch.

Guides and articles content remains in English.

Mongil: Star Dive — Beginner Guide

Adventure map, jumping, gathering and the first-week checklist — every core mechanic the in-game tutorial walks you through, written in one place.

Trakan

Updated Patch 1.0

Reroll Guide — Best Targets and Stop Conditions

Best characters to chase on a fresh account, the fastest reroll path, and when the meta says you should stop and commit.

Trakan

Updated Patch 1.0

Best Team Comps — Destroyer, Slayer and Flex Slot

How team building actually works in Mongil — the Destroyer + Slayer + flex template the Stagger system rewards, when to break it for element-locked counters, and the Brawler-led sustained-DPS variant.

Trakan

Updated Patch 1.0

Combat Basics — Hold Attacks, Switch Skills, Ultimates

Basic attacks, special skills, switch skills and ultimate timing — the hold-input combat system explained without the in-game popup spam.

Trakan

Updated Patch 1.0

Frequently asked

What does King Slime do as a monsterling?: Equipped on a character, King Slime triggers a link skill: "Using a Special Skill". The skill activates each time the condition is met during combat.
How do I get King Slime?: Tame King Slime in the open world to recruit King Slime. The bestiary entry above lists every spawn location.
Can I fuse King Slime?: Yes — King Slime is a viable fusion ingredient. Combine it with the listed partners to create 1 different monsterling result.
What are King Slime's reinforcement costs?: King Slime reinforces up to level 60. Total cost: 5,025,139 EXP and 25,125,695 gold.
How many variants does King Slime have?: King Slime ships in 5 rarity variants — base ATK/DEF/HP scales from the lowest to the highest tier. The Variants section above lists each one.