What does Tree Youkai do as a monsterling?

Tree Youkai attaches to a character as a passive monsterling companion. See the variants section for the rarity floor each version starts at.

How do I get Tree Youkai?

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

Can I fuse Tree Youkai?

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

What are Tree Youkai's reinforcement costs?

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

How many variants does Tree Youkai have?

Tree Youkai 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 · #106

Tree Youkai

Element Fire

Fire
Grade 1

Tree Youkai is a common Fire-element Monsterling. It stands 15.0–17.2 m tall and weighs 70–95 kg. Available in 5 variants: N (1★), N (2★), R (3★), SR (4★), SSR (5★). Base stats range from 19/29/91 ATK/DEF/HP at N to 37/57/182 at SSR. Ability: Switch Skill Fire DMG +6.3% Can be fused with Orc Warrior to produce Stumpster (33% chance).

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

Last reviewed by Trakan — May 13, 2026

Profile

Height: 15.0–17.2 m
Weight: 70.0–95.0 kg
Companion scale: 0.85×Display size

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

HP2,226+2,044 from Lv. 1
ATK669+632 from Lv. 1
DEF1,044+987 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

Tree Youkai 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★19/29/91
N★★21/32/101
R★★★25/37/119
SR★★★★31/46/146
SSR★★★★★37/57/182

Tame from bestiary

Origin monsterTree YoukaiOpen bestiary entry →

Merge to create

Fuse Tree Youkai with these partners to produce a new monsterling.

Orc WarriorStumpster33% success

Find on map

Dimension spawn: steps 1–50 (normal).

Spawn locationsLocate Tree Youkai on the map7 spawn markers 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 Tree Youkai do as a monsterling?: Tree Youkai attaches to a character as a passive monsterling companion. See the variants section for the rarity floor each version starts at.
How do I get Tree Youkai?: Tame Tree Youkai in the open world to recruit Tree Youkai. The bestiary entry above lists every spawn location.
Can I fuse Tree Youkai?: Yes — Tree Youkai is a viable fusion ingredient. Combine it with the listed partners to create 1 different monsterling result.
What are Tree Youkai's reinforcement costs?: Tree Youkai reinforces up to level 60. Total cost: 5,025,139 EXP and 25,125,695 gold.
How many variants does Tree Youkai have?: Tree Youkai ships in 5 rarity variants — base ATK/DEF/HP scales from the lowest to the highest tier. The Variants section above lists each one.