Where can I find Uncle Cappy in Mongil: Star Dive?

Uncle Cappy spawns in the Elendor region at 1 marked location. It is a boss encounter — expect a longer fight with HP-phase mechanics.

What element is Uncle Cappy weak to?

Uncle Cappy is weak to Lightning damage. Build a team that leverages those elements for the fastest kills.

What does Uncle Cappy drop?

Uncle Cappy drops 7 different items on defeat. See the Drops section for icons, names and rates — tap any tile to open the source item codex entry.

Can Uncle Cappy be tamed?

Yes — Uncle Cappy can be tamed. Hitting 5 taming milestones unlocks new codex entries. Reach the final tame to recruit it as the Uncle Cappy monsterling.

Is Uncle Cappy a boss?

Yes — Uncle Cappy is a boss-tier encounter with 3 HP phases. Bring elemental counters and don't underestimate the phase transitions.

Mongil Codex · Boss · Elendor

Uncle Cappy

Level 1

Fire
Boss
Elendor

Uncle Cappy is a boss encountered in Elendor. It cycles through 3 HP phases during the fight.

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

Last reviewed by Trakan — May 13, 2026

Stats

HP: 2,984Hit points
ATK: 28Attack
DEF: 84Defence

Elemental weaknesses

Lightning

HP phases

Uncle Cappy cycles through 3 HP phases during the fight. Each phase threshold triggers new mechanics and survives until the boss drops below the next checkpoint.

Phase 1HP 100% → 67%
Phase 2HP 67% → 33%
Phase 3HP 33% → 0%

Taming tiers

Tame Uncle Cappy repeatedly to unlock codex entries and earn rewards. Milestone tames mark new lore entries.

×1Entry 1Nyanners EXP ×750
×2Nyanners EXP ×750
×3Entry 2Nyanners EXP ×750
×4Nyanners EXP ×750
×5Entry 3Nyanners EXP ×750
×6Nyanners EXP ×750
×7Entry 4Nyanners EXP ×750
×8Nyanners EXP ×750
×9Nyanners EXP ×750
×10Entry 5Nyanners EXP ×750

Codex milestones at tames 1, 3, 5, 7, 10.

Drops

Items Uncle Cappy can drop. Tap a tile to open the item codex entry.

Monsterling

Tame to recruitUncle CappyOpen monsterling page →

Find on map

Ventus Forest

Dimension spawn: steps 1–50 (special).

Spawn locationsLocate Uncle Cappy on the map1 spawn marker{count, plural, one {} other {s}} 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

Where can I find Uncle Cappy in Mongil: Star Dive?: Uncle Cappy spawns in the Elendor region at 1 marked location. It is a boss encounter — expect a longer fight with HP-phase mechanics.
What element is Uncle Cappy weak to?: Uncle Cappy is weak to Lightning damage. Build a team that leverages those elements for the fastest kills.
What does Uncle Cappy drop?: Uncle Cappy drops 7 different items on defeat. See the Drops section for icons, names and rates — tap any tile to open the source item codex entry.
Can Uncle Cappy be tamed?: Yes — Uncle Cappy can be tamed. Hitting 5 taming milestones unlocks new codex entries. Reach the final tame to recruit it as the Uncle Cappy monsterling.
Is Uncle Cappy a boss?: Yes — Uncle Cappy is a boss-tier encounter with 3 HP phases. Bring elemental counters and don't underestimate the phase transitions.