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The Coppermind has spoilers for all of Brandon's published works, now including The Lost Metal and Tress of the Emerald Sea (Secret Project 1). Information about books that have not yet been released, like the other secret novels releasing in 2023 and Stormlight 5, is allowed only on meta-pages for the books themselves. For more details, see our spoiler policy. To view an earlier version of the wiki without spoilers for a book, go to the Time Machine!

Abilities Worldhopper
Species Dragon (cosmere)
Universe Cosmere
Featured In Tress of the Emerald Sea
This page or section contains spoilers for Tress of the Emerald Sea!
This information has the ability to potentially ruin elements of the plot for the reader. Proceed with caution if you have not read this book.
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I don’t care for the hearts of mortals, Except for how they taste.

—Xisis rebutting Tress.[1]

Xisisrefliel, or Xisis for short, is a dragon, originally from Yolen, currently living on Lumar in the Crimson Sea.[2][3] Because of this the sea is known as 'the domain of the dragon.'[4]

Appearance and Personality[edit]

Xisis has black scales, silvery hair, and dragonsteel ridges, claws and horns. He is primarily interested in his research and is unconcerned with desires of mortals.[5][6] He is very large, around the size of four humans standing on top of one another.[5]

There is only one being on Lumar that he fears, that being the Sorceress, and he refuses to in any way stand in her way.[1]

Attributes and Abilities[edit]

As a dragon, he possesses an extremely long lifespan,[7][8][9] and the ability to shapeshift through a currently unknown method.[5][10][11][12]

Xisis has the ability to cure diseases including that of spore eaters.[3][1] He claims that this is temporary, only lasting a year or two, it is not known if this is the truth, or simply a lie to prevent Crow from trying to escape.[1]

Xisis is also seemingly a Tenth Heightening Awakener, able to Command Awakened cloth without words.[1][13] He at least understands Awakening enough to make complex Awakened predictive Connection circuits in order to replicate Fort's broken board.[14][15]

Through unknown means he is also able to control and shape the spores of the Crimson Sea to his whim, allowing him to form tunnels to his base of operations at the bottom of the ocean. This base is itself a series of tunnels made out of the Crimson Spores.[16]


Xisis has lived on Lumar in a palace at the bottom of the Crimson Sea for hundreds of years before the events of Tress of the Emerald Sea.[3] During this time he has been researching the ecosystem at the bottom of the spore seas.[5] To help with his chores and research, he has been making trades, taking a slave in exchange for a boon.[6] Captain Crow takes the Crow's Song above his palace and is able to get an audience with him in order to sell Tress to him. Tress however, is able to convince him to take Captain Crow instead.[1]


  • Brandon first revealed the name when asked if there are any cosmere characters with names starting with X by an artist working on a "cosmere A-Z" fanart collection.[2]


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