This was originally intended to be the finale of the trilogy. While later films like Days of Future Past changed the timeline, this remains the "end point" for the original 2000s continuity.
There is a post-credits scene that is crucial for understanding the fate of a major character. 5. Why It’s Controversial X-Men 3 The Last Stand
The final battle on Alcatraz Island is one of the largest set pieces in the franchise. Look for the creative ways the mutants combine their powers. This was originally intended to be the finale of the trilogy
Now a more prominent member of the team, she plays a vital role in the final battle against Juggernaut . 3. Themes to Watch For X-Men 3 The Last Stand