Mongil: Star Dive — Monsterlings Guide
Complete guide to Monsterling collection, fusion, Dimensional Rift strategies, and trait optimisation.
Mongil: Star Dive — Monsterlings Guide
Mongil: Star Dive · Strategy Guide
MonsterlingsComplete Guide
Collection · Fusion · Dimensional Rift · Traits
3 Rift tickets / week165 Monsterlings56+ Mutations5★ Upgrade path
Monsterling Sources
Each Monsterling has a fixed source depending on its rarity. Understanding this avoids wasting time looking in the wrong place. Browse the full Monsterling list to filter by element, rarity, and source.
Overworld Map
Blue rarity and below — Spawn freely in the overworld. Run a map and move on. Examples: Cappy Mama, Uncle Cappy, Gorrik, Ring Slime.
Request Board
Purple rarity — Request Board only. Target ones that don't appear on the map. Examples: Man War, Plains Minotaur. Exception: Behemo-wolf is also only on the Request Board despite being a mid-tier pick.
Conquest
Gold / Conquest rarity — Conquest Board only. These are end-game best-in-slot Monsterlings. Farm Conquest daily once you can clear it.
Dimensional Rift
Dimensional Rift — Special and Boss tier. Includes direct final mutations (Nokjung, Maple Odong, Amon, Avardan…). 3 tickets per week, reset Monday.
On the Request Board, don't refresh for common Monsterlings you can farm on the map (Uncle Cappy, Gorrik, Ring Slime). Save refreshes for purple rarity targets you can't get in the overworld.
Dimensional Rift — The Fast Path
3tickets / week
129species available
19boss encounters
Monweekly reset
Key insight:You don't need to farm intermediate mutation chains step by step. The Dimensional Rift can spawn final mutations directly (Nokjung, Maple Odong, Moon Shadow Lupe…). Refresh with Gold at unlocked stages to find your target instead of farming from scratch.
Shortcut strategy
1
Unlock stages in order — Each stage must be opened sequentially. Don't refresh until a stage is already unlocked.
2
Refresh with Gold on unlocked stages — If the current stage doesn't show your target, refresh. Don't over-spend — if the cost is too high, move down to a cheaper stage instead.
3
Step 11+ for Wind targets (Nokjung, Manwol) — Before step 11, the recommended weakness is not yet Wind. Stay at step 11 or higher when targeting Wind Monsterlings.
4
Boss victories guarantee a drop — Every boss fight in the Rift guarantees the Monsterling. Win the fight and it's yours.
New players:Don't burn through event keys before unlocking the Dimensional Rift. Finish the story to unlock the Rift and clear up to step 10+ first — then use event shops to buy Enhancement Stones.
Current season: Season 2 features Mina (active until May 27, 2026). The featured character and element pool rotate every few weeks — the season determines which Monsterlings are prioritized in encounters.
Combination — Star Rating System
The maximum star rating obtainable from wild capture is 3★. Reaching 4★ and 5★ requires the Combination system or Enhancement Stones.
Star rating path via combination
1★Gray
2★Green
3★Blue
4★Purple
5★Gold
How to combine efficiently
Two same-star Monsterlings → percentage chance to upgrade one to the next star level. Check the Rate tab before confirming to see exact success percentages.
Batch combine— Use "Combine by Batch" and filter by star level. Select all 1★, combine them to 2★ in one go, then repeat for 2★ → 3★. Much faster than combining one by one.
EXP transfer — When combining, the higher-level Monsterling's EXP carries over to the offspring. Always combine a level 60 + level 1 to maximise XP transfer and avoid wasting a levelled copy.
Trait risk — Combination can change traits. If your Monsterling has yellow (special quality) traits, use Enhancement Stones instead or lock the trait first with Salmon Puree before combining.
Be careful with near-identical Monsterlings in your inventory — it's easy to accidentally combine the wrong one. Equip or lock the copies you want to keep before batch combining.
Enhancement Stones — Safe Star Upgrade
Enhancement Stones upgrade a Monsterling's star rating without changing its traits. Use these when you have a Monsterling with perfect traits you don't want to risk through combination.
Upgrade path with Enhancement Stones
1★ Gray
Green Stone
2★ Green
Blue Stone
3★ Blue
Purple Stone
4★ Purple
Gold Stone
5★ Gold
Enhancement Stones are available in event shopsduring seasonal events. Stock up when they appear — they're the only upgrade method that preserves traits 100%.
Traits & Premium Salmon Puree
Every Monsterling has 4 material traits that provide stat bonuses. Traits have their own rarity grades — Yellow (Special quality)is the best. During combination, traits from both parents can transfer but aren't guaranteed to do so.
Key mechanics
Lower-rarity traits have a higher transfer rate — which means your best yellow traits are actually harder to preserve through combination. Always lock them before combining.
When you see a yellow trait, lock it before combining. You can view transfer rates under the "Rate" tab in the combination screen.
Locking traits with Premium Salmon Puree
5Purees = 1 trait locked
10Purees = 2 traits locked
Obtain Premium Salmon Puree in the Rift Shop using Token Coins earned from Dimensional Rift runs.
Strategy: building a 4-trait special Monsterling
Get two copies of your target Monsterling (e.g. Nokjung), each with 2 different Special-grade traits. You cannot stack two identical elemental weakness traits on a single Monsterling.
Bring both copies to 5★ first via combination or Enhancement Stones.
Lock both Special traits on each copy (10 Purees each).
Combine the two → the offspring inherits all 4 Special traits, giving you a best-in-slot Monsterling.
Mutations
Mutations are special Monsterlings created by combining two specific parents. They unlock unique abilities unavailable on standard captures and are key to endgame builds.
Check the Mutations tab in the Combining menu — it shows all available recipes including undiscovered ones. This is your primary reference for what can be made and which parents are needed.
Mutation success is not guaranteed. Rates vary per recipe (typically 20–33%). A failed attempt produces a duplicate of either parent — not a total loss, but be prepared for multiple tries.
Some mutation chains are multi-step — you may need an intermediate mutation before reaching the final form. The Dimensional Rift shortcut (see above) lets you skip these chains entirely for final-tier targets.
The combination screen shows potential new traitsthat can appear in the offspring. Check them before confirming if you're hunting specific abilities.
There are 56+ known mutation combinations. Visit our Fusion Calculator for a complete reverse-lookup by result or by parents.
Best Monsterlings by Stage
Early Game
Easy to obtain on the overworld map. Strong enough to carry you into mid-game content — prioritise these before investing in harder targets.
Cappy Mama
EarthRecovers 2.4% Max HP on Special Skill (15s CD)
Map · Heals on Special Skill — removes the need for a dedicated healer early on
Gorrik
NormalRecovers 2.4% Max HP after 10 Basic Attacks
Map · Passive HP regen on basic attacks — great alongside Cappy Mama for sustained healing
Uncle Cappy
FireSpecial Skill Fire DMG +8% (15s CD)
Map · Fire team amplifier — pair with Fire characters for an easy DPS boost
Taglock
NormalATK +5.5% for 10s after 20 successful attacks (20s CD)
Map · Universal ATK boost — works in any team composition
Forkmugger (elemental resistance debuff) is obtainable via the redeem code MONGILPRESENT if still active. Check our codes page for currently valid codes.
Mid Game
Dimensional Rift and Request Board targets. More investment required, but they provide significant advantages in boss and Conquest content.
Amon
DarkAll teammates Crit Rate +11% for 10s after attacking a boss 10 times
Dimensional Rift · Team-wide Crit Rate on boss hits — best boss support available
Avardan
EarthAll teammates Ultimate Skill DMG +11% for 10s when hit by a boss
Dimensional Rift · Amplifies team Ultimate Skill during burst windows
Behemo-wolf
NormalSuppression DMG +8% for 10s on critical hit
Request Board only · Suppression synergy for Assassin builds
Moon Shadow Lupe
IceTarget Ice RES -11.6% for 10s on critical hit
Dimensional Rift · Ice resistance shred — mandatory for Ice element teams
Late Game / Endgame
Conquest board drops or high-investment Rift targets. These define endgame builds — worth farming once your core team is solid.
Onsae
FireCrit DMG +11% for 5s on Ultimate Skill critical hit
Fire · Crit DMG spike on Ultimate crits — best-in-slot for burst DPS builds
Gulgak
LightningBoss DEF -8.7% for 5s on critical hit
Lightning · Boss DEF shred — multiplies entire team damage in boss fights
Manwol
WindCrit Rate +11% for 5s on Evasion Counter
Wind · Evasion Counter Crit Rate boost — core for Wind evasion builds
Nokjung
WindCrit Rate +11.6% for 5s on Evasion Counter
Wind · Enhanced Manwol — top Crit Rate on Evasion Counter, endgame upgrade
Link Chain Mechanics
Link Chains allow equipped Monsterlings to appear in combat and perform attacks or apply effects. Getting them to trigger consistently is key to maximising their value.
Critical mechanic: Link Chains do NOT trigger automatically when switching characters. You must perform an action first, then switch— the outgoing character's Switch Skill is what fires the link. Switching without acting beforehand skips the trigger entirely.
Activation conditions
Each Link Chain has a specific trigger. Common ones — see the full list on our Link Skills page:
Using a Special Skill
Using a Switch Skill
Landing a critical hit
Evasion Counter
Air Counter
HP drops below 50%
Stamina fully consumed
Entering Burst mode
Team composition tips
Always equip at least 1 Link Chain per team of 3. In Conquest (5-minute fights) you can trigger it multiple times — the compounded effect is substantial.
Match the Link Chain's activation condition to how your team actually plays. A "on Special Skill" link is wasted on a team that rarely uses Special Skills in rotation.
Conditions with easy triggers (landing any critical hit, basic attacks) provide more consistent value than situational ones (HP below 50%, Stamina depleted).
Daily & Weekly Routine
Server resets daily at 00:00 UTC. Dimensional Rift resets every Monday.
Daily
Spend Keys on Paths
Farm materials for progression. Use Auto Clear on already-completed stages to save time.
Conquest — 3 tickets
Boss challenges. Auto Clear available once completed. Primary source of gold-rarity Monsterlings long-term.
Daily Contributions
Earn Starlight Crystals and Gold. Quick task — never skip these.
Request Board — 5 requests
Target purple-rarity Monsterlings not available on the map. Skip common ones (Uncle Cappy, Gorrik) — farm those in the overworld.
Adventurer Quests
75 Starlight Crystals from daily quests. Use the Go fast-travel button in the journal for efficiency.
Friend Keys
Send up to 30 keys and receive up to 20 from friends daily.
Events
Check active events for Enhancement Stones, Compasses, and training materials — especially important during seasonal events.
Weekly
Dimensional Rift — 3 tickets
Cannot be auto-cleared — bring a strategic team. Refresh stages to find your target Monsterling directly instead of farming the full mutation chain.
Tips & Common Mistakes
What to avoid
Don't combine Monsterlings with strong traits without locking them first. Even a 5★ with perfect yellow traits will lose them in a failed combination. Lock with Salmon Puree before combining — always.
Don't search the map for purple or gold rarity Monsterlings.They don't spawn in the overworld. Only blue rarity and below appear naturally on the map.
Don't refresh the Request Board for common Monsterlings.Refreshes cost Gold. Target only what you can't get elsewhere — purple rarity picks that have no map spawn.
Don't use event keys before unlocking Dimensional Rift (new players). Finish the main story first, unlock the Rift, reach step 10+, then use event shops to buy Enhancement Stones.
Best practices
Use Enhancement Stonesfor any Monsterling with perfect traits — it's the only star upgrade method that preserves traits 100%. Save stones for these cases.
Batch combine regularly. Sort by star level, select all 1★, batch-combine to 2★, repeat for 2★ → 3★. Doing this a few times a week keeps your inventory clean and builds a steady supply of higher-star fodder.
Always combine level 60 + level 1.The EXP from the higher-level Monsterling transfers to the offspring. Combining two levelled copies doesn't give more XP — you just lose one of them.
Use the Source button on any Monsterling in your bestiary to see exactly which map or board it spawns on — no guesswork needed.
Check the Rate tab before every combination — it shows exact trait transfer percentages so you can make an informed decision about whether to lock or risk it.