What does Irontoise do as a monsterling?

Equipped on a character, Irontoise triggers a link skill: "Landing an attack". The skill activates each time the condition is met during combat.

How do I get Irontoise?

Irontoise is obtained through gameplay progression — check the linked map locations or merge sources.

Can I fuse Irontoise?

Irontoise cannot be merged with another monsterling. Keep it on its current character for the link skill.

What are Irontoise's reinforcement costs?

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

How many variants does Irontoise have?

Irontoise 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 · #10801

Irontoise

Element Normal

Normal
Grade 2

Irontoise is a rare boss-type Normal-element Monsterling. It stands 22.0–28.0 m tall and weighs 240–320 kg. Available in 5 variants: N (1★), N (2★), R (3★), SR (4★), SSR (5★). Base stats range from 21/32/101 ATK/DEF/HP at N to 41/63/202 at SSR. Ability: All teammates' DEF +6% for 10s upon landing a critical hit on a boss enemy

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

Last reviewed by Trakan — May 13, 2026

Profile

Height: 22.0–28.0 m
Weight: 240.0–320.0 kg
Companion scale: 0.60×Display size

Link skill

Link skill · Lv. 5 · Normal

Landing an attack

If the Irontoise Monsterling is equipped, it appears when its Appearance Condition is met. It quickly charges at the enemy and attacks several times with a mace, dealing DMG and rendering the enemy Airborne.

[Appearance Condition]
Landing an attack

[Appearance Info]
DMG based on equipping character's ATK: 100%
Cooldown: 8s

Damage: 100% · Cooldown: 8s

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

HP2,473+2,271 from Lv. 1
ATK743+702 from Lv. 1
DEF1,159+1,096 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

Irontoise 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★21/32/101
N★★23/35/112
R★★★28/41/132
SR★★★★34/51/162
SSR★★★★★41/63/202

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 Irontoise do as a monsterling?: Equipped on a character, Irontoise triggers a link skill: "Landing an attack". The skill activates each time the condition is met during combat.
How do I get Irontoise?: Irontoise is obtained through gameplay progression — check the linked map locations or merge sources.
Can I fuse Irontoise?: Irontoise cannot be merged with another monsterling. Keep it on its current character for the link skill.
What are Irontoise's reinforcement costs?: Irontoise reinforces up to level 60. Total cost: 5,025,139 EXP and 25,125,695 gold.
How many variants does Irontoise have?: Irontoise ships in 5 rarity variants — base ATK/DEF/HP scales from the lowest to the highest tier. The Variants section above lists each one.