The WORST episodes of X-Men

Every episode of X-Men ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of X-Men!

The X-Men are reunited following the death of a teammate, and are summoned by Charles Xavier to Japan following the abduction of Hisako Ichiki (Armor). There, they confront the U-Men, a lunatic cult that steals and transplants mutant organs to further strengthen their own army, and the battle for justice is on.

Last Updated: 7/22/2026Network: AnimaxStatus: Ended

6.92

184 votes

#1 - Lost (Signs)

Season 1 - Episode 8 - Aired 5/27/2011

Yui's experimental drug fails to stop the mutant gene from awakening.

Watch Now:Apple TV

6.97

274 votes

#2 - Transformation (Secondary Mutation)

Season 1 - Episode 4 - Aired 4/22/2011

Emma Frost joins the X-Men; Hisako begins training; Professor X probes Emma Frost's mind to explore her past.

Watch Now:Apple TV

7.04

153 votes

#3 - Revelations (From Behind The Scenes)

Season 1 - Episode 9 - Aired 6/3/2011

The X-Men best Hedgehog and follow Marsh and Mastermind deeper into Yui's laboratory.

Watch Now:Apple TV

7.08

213 votes

#4 - Betrayal (Shock)

Season 1 - Episode 7 - Aired 5/20/2011

The X-Men battle a giant monster that turns out to be a transformed research assistant.

Watch Now:Apple TV

7.11

484 votes

#5 - The Return (Joining Forces)

Season 1 - Episode 1 - Aired 4/1/2011

Professor X summons the team to reassemble to rescue a fellow mutant in Japan in the opener of the anime series following the adventures of a group of superheroes.

Watch Now:Apple TV

7.19

274 votes

#6 - Armor (Awakening)

Season 1 - Episode 3 - Aired 4/15/2011

Professor X runs tests on Emma Frost out of concern for her safety after learning that the mutants that were captured by the U-Men are forming secondary powers.

Watch Now:Apple TV

7.34

334 votes

#7 - U-Men (Mutant Hunting)

Season 1 - Episode 2 - Aired 4/8/2011

The X-Men learn of a second mutant kidnapping, and they step into the trap of an anti-mutant group.

7.38

213 votes

#8 - Conflict (Contested)

Season 1 - Episode 6 - Aired 5/13/2011

An unknown foe rises as Wolverine, Storm and Beast investigate the Blackbird.

Watch Now:Apple TV

7.43

332 votes

#9 - Power (Unity)

Season 1 - Episode 5 - Aired 4/29/2011

The X-Men return to Japan to probe the site where mysterious secondary mutations have occurred.

Watch Now:Apple TV

7.44

94 votes

#10 - Revenge (End)

Season 1 - Episode 11 - Aired 6/17/2011

Professor X summons the X-Men to protect humanity as the world is on the brink of destruction.

Watch Now:Apple TV

7.45

243 votes

#11 - Countdown (Truth)

Season 1 - Episode 10 - Aired 6/10/2011

Marsh traps Emma Frost, Hisako and Yui; Neuron subdues Wolverine and Beast; Hisako reflects on a mutant who went into hiding.

Watch Now:Apple TV

7.61

183 votes

#12 - Destiny (Bond)

Season 1 - Episode 12 - Aired 6/24/2011

On the brink of world destruction, Charles reaches out to all the X-Men, other mutants and heroes around the world asking them to support one another and protect humanity.

Watch Now:Apple TV