Deltarune: How to Beat Watercooler

How to Beat Watercooler in Deltarune

By Daniel Hidalgo | 2025-06-15 11:12:05
Deltarune is full of quirky and unexpected encounters, and one of the most amusing is the Watercooler boss. Though not officially a "secret boss," this bizarre yet hilarious fight has become a fan-favorite meme, appearing in Chapters 3 and 4 with its own unique charm.
If you're wondering where to find the Watercooler, why it keeps appearing, and how to beat it easily, this guide covers everything you need to know!

Where to Find the Watercooler in Deltarune

Chapter 3 Locations


  • Green Room (C-Rank Room) – During the game show segment, head to the Green Room between rounds. Inside, you’ll find the Watercooler waiting.
  • Post-Shadowguy Fight – After battling Shadowguy and the two Pippins, navigate through a stealth section with spotlights and a room full of garbage cans.
  • The Inescapable Encounter – Avoid another set of spotlights, enter a door leading north, and the Watercooler will be there (along with a chest). If you try to leave, two more Watercoolers will block your exit. Keep entering and exiting the room, and more will appear until you’re forced to fight one!

    • Chapter 4 Locations


  • Climbing Section (After Jackenstein) – While scaling the wall with falling water, reach the upper-left corner to find a large wooden water container. Interact with it for funny dialogue—then get ambushed by the Watercooler!
  • Organ Room (Non-Fight Appearance) – After the fight, proceed until you find a large organ. Head right, and you’ll see multiple Watercoolers scattered around, with Mizzles jumping out of them.

    • Why Does the Watercooler Keep Appearing?


    The Watercooler’s recurring role is a classic Toby Fox joke—absurd, unexpected, and full of personality. With its limited vocabulary (saying things like "boble," "buble," "babie," and "bubie"), it has become a beloved meme in the Deltarune community.


    Its persistence across chapters makes it a running gag, fitting perfectly with the game’s offbeat humor.

    How to Beat the Watercooler Easily


    The Watercooler fight is more about humor than difficulty, but here’s how to win quickly:


  • Use "Act Cool" Repeatedly – This fills its Mercy meter fast. Once maxed, you can spare and recruit it.
  • Try "Flirt" for Fun Dialogue – You’ll hear water-themed pickup lines and see the Watercooler turn pink in embarrassment.
  • Dodge Its Attacks – The Watercooler’s main attack involves raindrops merging into a giant water ball in the center of the screen. Avoid both the drops and the expanding ball. Sometimes, the ball moves side to side, so stay alert!

    • Final Thoughts: Embrace the Meme


    The Watercooler may not be the toughest boss, but it’s one of Deltarune’s most memorable encounters. Whether you love it for the humor or the absurdity, this fight is a perfect example of Toby Fox’s signature style.


    Now that you know where to find it and how to beat it, go enjoy this bizarre battle—and don’t forget to act cool!

    Platform(s): macOS, Windows PC, Nintendo Switch, PlayStation 4 PS4 . Nintendo Switch 2, PlayStation 5 PS5
    Genre(s): Role-playing
    Developer(s): Toby Fox
    Publisher(s): Toby Fox
    Engine: GameMaker Studio 2
    Mode: Single-player
    Age rating (PEGI): +12
    Video preview▶


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