What does Red Shadow do as a monsterling?

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

How do I get Red Shadow?

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

Can I fuse Red Shadow?

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

What are Red Shadow's reinforcement costs?

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

How many variants does Red Shadow have?

Red Shadow 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 · #17101

Red Shadow

Element Water

Water
Grade 2

Red Shadow is a rare boss-type Water-element Monsterling. It stands 178.0–192.0 m tall and weighs 6550–7200 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: Crit DMG +11% for 4s upon using an Ice Special Skill

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

Last reviewed by Trakan — May 13, 2026

Profile

Height: 178.0–192.0 m
Weight: 6550.0–7200.0 kg
Companion scale: 0.06×Display size

Link skill

Link skill · Lv. 5 · Ice

Using a Special Skill

If the Red Shadow Monsterling is equipped, it appears when its Appearance Condition is met. It goes underground and jumps out at the enemy, dealing Ice 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]
5% Ice RES Reduction (5s)
15% Neutralization RES Reduction (5s)

Damage: 200% · 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

HP2,721+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

Red Shadow 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

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