
Episodes

1. The Return
1 Apr 2011 · 23 min · 6.0/10
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.

2. U-Men
8 Apr 2011 · 23 min · 5.2/10
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.

3. Armor
15 Apr 2011 · 23 min · 5.0/10
Hisako's mutant powers are weakened during a fierce battle between the X-Men and Todd, the U-Men's mad scientist.

4. Transformation
22 Apr 2011 · 23 min · 5.0/10
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.

5. Power
29 Apr 2011 · 23 min · 5.0/10
Emma allows Professor Xavier to read her mind and reveal her thoughts after Cyclops opposes her membership in the X-Men.

6. Conflict
13 May 2011 · 23 min · 5.2/10
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.

7. Betrayal
20 May 2011 · 23 min · 5.2/10
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.

8. Lost
27 May 2011 · 23 min · 4.3/10
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.

9. Revelations
3 Jun 2011 · 23 min · 4.0/10
Revelations abound when it's discovered that Riko and Kaga were drugged by Yui and that Jun and Mastermind are one in the same.

10. Countdown
10 Jun 2011 · 23 min · 4.0/10
Mastermind's evil plans are frustrated as a fierce battle between the X-Men and the Four Pillars of the Inner Circle rages on.

11. Revenge
17 Jun 2011 · 23 min · 2.0/10
Despite Yui's attempts to suppress them, Takeo's powers continue to gain strength, causing reality itself to become more and more twisted.

12. Destiny
24 Jun 2011 · 23 min · 3.7/10
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.
X-Men Season 1: quick answers
How many episodes are in X-Men Season 1?
Season 1 of X-Men has 12 episodes, about 5 hours in total.
When did X-Men Season 1 come out?
Season 1 premiered on 1 Apr 2011.
What is the best episode of X-Men Season 1?
By viewer score, episode 1, “The Return”, at 6.0/10.