Wondering how to find and defeat Cthulhu Boss in Roblox Fisch? Cthulhu is a boss enemy who is well hidden in the game and defeating him is necessary to enter Second Sea.
However, as we’ve expected, many players are having a hard time finding Cthulhu Boss’ location. With that said, here’s a quick guide to help you find the Cthulhu boss in Roblox Fisch.
Fisch Cthulhu Boss Location

Cthulhu Boss is located on the Terrapin Island, right next to the Sea Traveler NPC. This island is situated in the First Sea, and you can find it at the exact coordinates (140, 150, 2030). If you’re having trouble finding it, you can refer to the in-game map or check the above image for a visual reference.
After reaching the location, enter the door and the cutscene will trigger. In this cutscene, you’ll see people worshipping Cthulhu. Once it ends, you can head forward to start the Cthulhu boss fight.
Keep in mind that you’ll need to stand in the center of the circle and wait for atleast 2 minutes before the battle begins. A maximum of 5 players can participate together to fight against the boss. So it’s better to bring your friends and avoid going solo.
How To Defeat Cthulhu Boss in Fisch

Cthulhu Boss fight occurs in six different stages. As you enter the battle arena, you’ll find a Keeper Altars torch that you can use to damage Cthulhu.
His health bar is divided into six colours – Red, Orange, Yellow, Green, Blue and Purple. As you deal damage and his health bar depletes, you will need to keep an eye on the color.

For example, if the health bar is at orange color, you’ll need to head to the Orange platform by completing a small obby and use the flame on it to change the color of your torch. Once the torch’s color is aligned with the health bar, you can damage the boss again.
Keep in mind that if you fall off the obby, you’ll be eliminated and have to start the entire process again.
After defeating the Cthulhu boss, you can finally talk to the Sea Traveler NPC in order to teleport to the Second Sea.