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Volpedia/Games/Hollow/Bosses/Uumuu
HOLLOW KNIGHT / BOSSES

Uumuu

A jellyfish-like boss in Teacher's Archives with electrical hazards and encounter-specific vulnerability.

BOSSESReviewed 2026-10-28Reference · noindex
Original Hollow Knight editorial concept diagram, not a game screenshotOriginal Volpedia diagram
OverviewCharacters20Weapons9Charms39Abilities10Spells8Maps20Bosses30Enemies12Items16Quests9Godmaster11Modes5Progression10Builds6Endings5Guides19Tips10Tools2
Volpedia strategy: Read the environment and use the safe vulnerability windows.
How it worksPractical strategyCommon mistake to avoidRelated entries
01

How it works

A jellyfish-like boss in Teacher's Archives with electrical hazards and encounter-specific vulnerability.

02

Practical strategy

Read the environment and use the safe vulnerability windows.

03

Common mistake to avoid

Attacking the shell continuously while it cannot be damaged.

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Related Hollow Knight articles

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An infected Vessel in Ancient Basin with mobile lunges and floating infection pressure.

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A powerful creature attacking in close range and spraying infection projectiles.

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A Crystal Peak boss whose laser telegraphs make position crucial.

bossesDung Defender

A boisterous Royal Waterways boss who dives underground and launches dung balls.

bossesEnraged Guardian

A stronger encounter related to Crystal Guardian with tighter laser pressure.

bossesFalse Knight

An early armoured boss whose hammer shocks the arena floor and can break parts of the stage.

Back to Bosses
IN THIS ARTICLEHow it worksPractical strategyCommon mistake to avoidRelated articles
MORE CATEGORIESCharactersWeaponsCharmsAbilitiesSpellsMapsEnemiesItemsQuestsGodmasterModesProgressionBuilds

Independent Volpedia encyclopedia for Hollow Knight by Team Cherry; not Hollow Knight: Silksong. Original editorial diagrams are symbolic, not game screenshots or exact character depictions. Existing approved cover preserved. Verified editorial references are recorded in the internal M60 source registry. Hollow Knight and associated names are trademarks of their respective holders. Editorial review: 2026-10-28.

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