The Wildest UNCANNY Story Yet Continues As Graymalkin Prison’s INMATE X Revealed At Last in Uncanny X-Men #29

By Chad Burdette

 on May 8, 2026

The X-Men have borne witness to one of the darkest Marvel futures imaginable in Age of Revelation!

Following the event, Cyclops returned to the present armed with knowledge to alter mutantkind’s fate forever, ushering in the SHADOWS OF TOMORROW, the next era of X-Men storytelling!

Related:

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• The X-Men & Fantastic Four Join Forces To Stop The X-Virus From Mutating Humanity in DNX
• Murder Abounds At This Year’s Hellfire Gala in X-Men: Hellfire Murder #1
• Chris Claremont Returns With Another Revelatory Retro Series Set During His Incredible Uncanny X-Men Run With Gambit: Wanted
• Snikt! Snikt! & Snapt! Wolverine’s Claws Are Shattered This Summer Releasing The Animal Within
• See What May 2026 Has In Store For The X-Men In The New SHADOWS OF TOMORROW Era Of Mutant Storytelling
• Return To The Time When The X-Men Operated Out Of The Land Down Under in X-MEN: OUTBACK Limited Series
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The X-Men are now armed with knowledge to prevent one of the darkest futures in Marvel Comics history.

It’s time to embrace bold action, strengthen alliances, and empower the next generation!

Comic Watch Reviews:

• Uncanny X-Men #27: The Even Newer New Mutants
• Uncanny X-Men #26: Change of Pace
• Uncanny X-Men Annual 2026: ‘Til He’s 90
• Uncanny X-Men #26: Change of Pace
• Uncanny X-Men #25: Lady Darkhold
• Uncanny X-Men #24: That’s So Not Dracula
• Uncanny X-Men #23: Time For An Intervention

United, the X-Men will save mutantkind’s future and ensure their dream isn’t darkened by the SHADOWS OF TOMORROW!

The wildest UNCANNY story yet, Who’s Sleeping In My Bed continues as Graymalkin Prison’s INMATE X is revealed at last in Uncanny X-Men #29 

X-Titles Also Out This Week:

• Comic Watch Exclusive: Events Culminate With A showdown Over A Century In The Making in Wolverine #20
• The Siblings Meet The Great Witch Baba Yaga, Who Is Not Happy To See Them in Magik And Colossus #4

Paco Medina Variant Cover:

Luciano Vecchio Stormbreakers What If…? Variant Cover:

Federico Sabbatini 1:25 Incentive Variant Cover:

Javier Charro Magic: The Gathering Variant / 1:50 Incentive Virgin Variant Cover:

Domenico Carbone Rogue Vsrisnt / 1:100 Incentive Virgin Variant Cover:

Uncanny X-Men #29

A mysterious turn of events brings the New Mutants to the Uncanny X-Men, and the Outliers are nowhere to be found! All this plus the secret of Graymalkin Prison’s INMATE X revealed at last! Who is this incredibly lethal mutant powerhouse, and what does it mean for mutantkind?

Creative Team

• Writer: Gail Simone
• Artist: Luciano Vecchio
• Colorist: Matt Wilson
• Letterer: VC’s Clayton Cowles
• Cover Artists: David Marquez & Matt Wilson
  
• Variant Cover Artists: Luciano Vecchio; Domenico Carbone; Javier Charro; Paco Medina
• Conductor of X: Tom Brevoort
• Assistant Editor: Lindsey Cohick
• Associate Editor: Anna Bissa
• Format: Ongoing Series
• Cover Price/Page Count: $4.99/36 pages

The wildest UNCANNY story yet, Who’s Sleeping In My Bed continues as Graymalkin Prison’s INMATE X revealed at last in Uncanny X-Men #28, on shelves and digital platforms on May 13, 2026, from Marvel Comics