Continue below to view the complete set of loglines for each episode of X-Men. The guide is presented via production order, details provided by Marvel Animation and Sony Entertainment Japan, with each episode listing also featuring airdate information.

1-01 The Return
Original Airdate October 21st, 2011
Cyclops, Wolverine, Beast and Storm reunite once more as a new danger threatens mutantkind.

1-02 U-Men
Original Airdate October 28th, 2011
The team has reassembled to track down the missing Hisako Ichiki, but what will they find when they land in Japan?

1-03 Armor
Original Airdate November 4th, 2011
Cyclops, Wolverine, Beast and Storm continue their battle against the mysterious U-Men as they search for the missing mutants in Japan.

1-04 Transformation
Original Airdate November 11th, 2011
The young mutant Hisako Ichiki shows off her newfound powers as she joins forces with Wolverine, Cyclops and Beast.

1-05 Power
Original Airdate November 18th, 2011
Now that Hisako Ichiki has decided to join the X-Men, her training as Armor begins!

1-06 Conflict
Original Airdate November 25th, 2011
With Emma Frost and Armor now officially part of the team, our heroes head back to Japan to get to the bottom of the mysteries surrounding the U-Men.

1-07 Betrayal
Original Airdate December 2nd, 2011
With the Blackbird down in the snowy mountains of Japan, Wolverine, Beast and Storm come across an unusual threat.

1-08 Lost
Original Airdate December 9th, 2011
Wolverine, Cyclops, Storm and Beast pull out all the stops, and you can catch all the action right here! But what is this monster, and what's it doing in Doctor Sasaki's labs?

1-09 Revelations
Original Airdate December 16th, 2011
What's sent Wolverine into a berserker rage against his teammates? And will the X-Men be able to survive an attack from one of their own?

1-10 Countdown
Original Airdate December 23rd, 2011
The team has begun to unravel the mystery that brought them to Japan, and with only three episodes to go the tension continues to mount.

1-11 Revenge
Original Airdate December 30th, 2011
With the Hellfire Club's plan coming to fuition and only two more episodes to go, Marvel's Merry Mutants have the deck stacked against them.

1-12 Destiny
Original Airdate January 6th, 2012
The true threat behind the X-Men's troubles in Japan has revealed itself, and now the team must fight Professor Xavier's son with the fate of the world in the balance!

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