What does Hahnul do as a monsterling?

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

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

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

What are Hahnul's reinforcement costs?

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

How many variants does Hahnul have?

Hahnul 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 · #143

Hahnul

Element Lightning

Lightning
Grade 2

Hahnul is a rare boss-type Lightning-element Monsterling. It stands 67.0–82.0 m tall and weighs 890–980 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' Switch Skill DMG +11% for 10s upon landing a critical hit on a boss enemy Can be fused with Goald to produce Gulgak (20% chance).

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

Last reviewed by Trakan — May 13, 2026

Profile

Height: 67.0–82.0 m
Weight: 890.0–980.0 kg
Companion scale: 0.35×Display size

Link skill

Link skill · Lv. 5 · Lightning

Using a Special Skill

If the Hahnul Monsterling is equipped, it appears when its Appearance Condition is met. It leaps toward the enemy and swings its front foot, enveloped in lighting, dealing Lightning DMG, inflicting Bonus Effects, and rendering the enemy Airborne.

[Appearance Condition]
Using a Special Skill
Landing an Ultimate Skill

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

[Bonus Effects]
10% Lightning RES Reduction (5s)
15% Neutralization RES Reduction (5s)

Damage: 200% · Cooldown: 8s

Chain-link unlocked at level 27.

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

Hahnul 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 monsterHahnulOpen bestiary entry →

Merge to create

Fuse Hahnul with these partners to produce a new monsterling.

GoaldGulgak20% success

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