Season 1

• 

  6.9/10184 votes

  The Return

  Season 1 Episode 1 - Aired 4/1/2011

  When a young girl named Hisako Ichiki goes missing in northern Japan, her parents seek help in Professor Xavier, who calls on the X-Men to unite.

  Director: Fuminori Kizaki

  Writer: Mitsutaka Hirota

• 

  6.9/10161 votes

  U-Men

  Season 1 Episode 2 - Aired 4/8/2011

  The X-Men carry out an investigation that leads them to the U-Men, a group of mad scientists whose hideout contains a horrifying secret.

  Director: Unknown

  Writer: Unknown

• 

  7.0/10156 votes

  Armor

  Season 1 Episode 3 - Aired 4/15/2011

  Hisako's mutant powers are weakened during a fierce battle between the X-Men and Todd, the U-Men's mad scientist.

  Director: Unknown

  Writer: Unknown

• 

  6.6/10146 votes

  Transformation

  Season 1 Episode 4 - Aired 4/22/2011

  The X-Men are put at risk of secondary mutation when the Blackbird is attacked by a bat-like creature showing dangerous signs of Damon-Hall Syndrome.

  Director: Unknown

  Writer: Unknown

• 

  6.8/10139 votes

  Power

  Season 1 Episode 5 - Aired 4/29/2011

  Emma allows Professor Xavier to read her mind and reveal her thoughts after Cyclops opposes her membership in the X-Men.

  Director: Unknown

  Writer: Unknown

• 

  6.9/10140 votes

  Conflict

  Season 1 Episode 6 - Aired 5/13/2011

  An intense battle ensues when the X-Men are attacked by remnants of the U-Men after being forced to execute an emergency landing in the Blackbird.

  Director: Unknown

  Writer: Unknown

• 

  6.8/10133 votes

  Betrayal

  Season 1 Episode 7 - Aired 5/20/2011

  Having defeated the U-Men, the X-Men come face to face with Yui Sasaki at her underground base, where she once ran a school for mutant children.

  Director: Unknown

  Writer: Unknown

• 

  6.8/10130 votes

  Lost

  Season 1 Episode 8 - Aired 5/27/2011

  After falling ill with Damon-Hall Syndrome, Riko and Kaga attack the X-men's base, while Emma spies on a stranger in her diamond form.

  Director: Unknown

  Writer: Unknown

• 

  6.9/10126 votes

  Revelations

  Season 1 Episode 9 - Aired 6/3/2011

  Revelations abound when it's discovered that Riko and Kaga were drugged by Yui and that Jun and Mastermind are one in the same.

  Director: Unknown

  Writer: Unknown

• 

  7.0/10127 votes

  Countdown

  Season 1 Episode 10 - Aired 6/10/2011

  Mastermind's evil plans are frustrated as a fierce battle between the X-Men and the Four Pillars of the Inner Circle rages on.

  Director: Unknown

  Writer: Unknown

• 

  7.0/10124 votes

  Revenge

  Season 1 Episode 11 - Aired 6/17/2011

  Despite Yui's attempts to suppress them, Takeo's powers continue to gain strength, causing reality itself to become more and more twisted.

  Director: Unknown

  Writer: Unknown

• 

  6.5/10126 votes

  Destiny

  Season 1 Episode 12 - Aired 6/24/2011

  The X-Men mount an attack to bring down Professor Xavier's son, Takeo, before he destroys the world, putting an end to both mutants and humanity.

  Director: Unknown

  Writer: Unknown