Season Four

Season Four of X-Men: Evolution premiered with Impact on September 30, 2003, and began its episodic run til the series' two-part finale Ascension on October 25th of the same year.

Summary
The final season contained only nine episodes. In the season premiere, Apocalypse apparently kills Magneto while Rogue murders Mystique by pushing her petrified figure off a cliff, leaving Nightcrawler without closure. The Brotherhood become temporary do-gooders, Wolverine's teenage girl clone X-23 returns, Spyke and the Morlocks rise to the surface, Shadowcat discovers a mutant ghost who is found in an underground cave, Rogue is kidnapped by Gambit and taken to Louisiana to help free his father, and Xavier travels to Scotland in order to confront his son Lucas. The character Leech is also introduced as a young boy.

In the finale, Apocalypse defeats Xavier and Storm, transforming them, along with Magneto and Mystique, into his Four Horsemen. Apocalypse instructs his Horsemen to protect his three domes and his 'base of operations', which will turn the entire world population into mutants. In the final battle, the Horsemen are returned to normal and Apocalypse is sent through time. Rogue and Nightcrawler refuse the excuses of their mother, Shadowcat and Avalanche find love once again, Magneto is reunited with Quicksilver and the Scarlet Witch, Storm and Spyke are also reunited, and Xavier sees his students reunited as the X-Men.