Cath Palug

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Cath Palug (キャスパリーグ, Kyasu Parīgu?), better known as Fou (フォウ, ?), is a character involved with the Grand Order conflicts of Fate/Grand Order.



It is Merlin's familiar, released after Merlin was eternally trapped in the Garden of Avalon in the Reverse Side of the World.


Fou is called a cute animal.



Garden of AvalonEdit

When Merlin was imprisoned in the Garden of Avalon, he went through the drafts and sketches he had made in life and started telling Cath Palug the events of King Arthur.[1]

After Merlin witnesses King Arthur last moments, he releases Cath Palug from the Garden of Avalon in the Reverse Side of the World. He insists Cath Palug to seek freedom and to play into something really beautiful.[2]

Fate/Grand OrderEdit

Fou is an animal that appears to be able to freely walk around the Chaldea Security Organization. It is met by the Protagonist while it is alongside Mashu.[3]

Merlin uses Cath Palug to temporarily reveal himself in order to help the Protagonist against Cú Chulainn Alter. After stating that they should be able to meet in a slightly different future should the Grand Order project succeed, he disappears.



Taiki is the illustrator for Fou.


  1. Garden of Avalon - Chapter 00: At the Garden, p.013
  2. Garden of Avalon - Chapter 06: In the Flower Garden, p.103
  3. Fate/Grand Order website: Fou: A cute animal who the protagonist meets alongside Mashu. It seems to walk around Chaldea freely.

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