Things Are About To Get Much Harder For The Mutants Of Hi No Kuni in Ultimate X-Men #21

By Chad Burdette

 on November 3, 2025

ULTIMATE X-MEN is the third launch in Marvel’s new ULTIMATE line that was born out of Hickman and Bryan Hitch’s ULTIMATE INVASION series. The saga began with the Maker, one of the final survivors of the doomed Ultimate Universe, travelling back in time on a parallel Earth to create a world without heroes. He succeeded in preventing various iconic heroes from achieving their destiny and ruled this world in secret through various global factions

Related: 

• Ultimate Spider-Man Ends And Ultimate Endgame Begins This December
• Marvel Announces ULTIMATE ENDGAME TRUE BELIEVERS BLIND BAGS For Ultimate End Event
• Marvel Announces the End of the Ultimate Universe!
• All Variants For The Debut Issue Of ULTIMATE ENDGAME, The Climactic Five-Issue Series That Begins This December

The excitement increased tenfold in March when renowned writer and artist Peach Momoko brought the Children of the Atom into this thrilling new storytelling landscape as ULTIMATE X-MEN continues it’s second year in Ultimate X-Men #20

Comic Watch Review:

• Ultimate X-Men #18: The Secret Is Out
• Ultimate X-Men #19: The Kids Are All Fighting
• Ultimate X-Men #20: Emperor Rising

Age Of Revelation Titles Also Out This Week

• X YEARS LATER: the X-Men Find Themselves Out Of The Frying Pan And Into The Hellfire in Amazing X-Men #2
• X-YEARS LATER: Beware The Power Of The Phoenix As Binary Faces Threats From All Angles in Binary #2
• X YEARS LATER: The Stage Is Set For A Show Unlike Any Other in Longshots #2
• X YEARS LATER: Sabretooth Haunts The Members Of Her Own Family in Laura Kinney: Sabretooth #2

Peach Momoko Variant Cover:

Kae Tanaka Variant Cover:

Aka 1:25 Incenitive Variant Cover:

Ultimate X-Men #21

The X-Men thought the Children of the Atom were their biggest problem. Little did they know, things are about to get much harder for mutants in Hi No Kuni..

Creative Team

• Writer: Peach Momoko
• Script Adaptation: Zack Davisson
• Artist: Peach Momoko
  
• Letterer: VC’s Travis Lanham
• Designer: Jay Bowen
• Standard Cover Artist: Peach Momoko
• Variant Cover Artists: Peach Momoko; Kae Tanaka; AKA
• Editor: Will Moss
• Assistant Editor: Michelle Marchese
• Format: Ongoing Series
• Page Count/Cover Price: 32 pages/$4.99

Things are about to get much harder for mutants in Hi No Kuni in Ultimate X-Men #21 on shelves & digital platforms on November 5, 2025, from Marvel Comics