Tolerance Is Extinction - Pt 2 - S1-E9
Trivia: When Rogue is joining Magneto, she hyperbolically mentions Morph being a member of the X-Men for 30 minutes before being killed. This is a reference to Morph being killed (though, later brought back) just a few minutes into the second episode of the original series, which would have been around 30 minutes of total runtime.
Tolerance Is Extinction - Pt 2 - S1-E9
Trivia: This episode sees the X-Men splitting into two strike forces, the Blue and Gold Teams, with the Blue Team traveling to Asteroid M to confront Magneto, and the Gold Team traveling to the Galapagos Islands to stop Bastion. This is loosely adapted from X-Men Vol. 2 #1, in which the Blue and Gold Teams were first established at Cyclops' proposal, with the Blue Team similarly traveling to Asteroid M to deal with Magneto.
Tolerance Is Extinction - Pt 2 - S1-E9
Trivia: When Cable scoffs at the uniform Cyclops gives him to wear, Cyclops asks if he was expecting black leather. This is a reference to the first X-Men film, when Wolverine scoffed at the X-Men's black leather uniforms, only for Cyclops to ask him if he preferred yellow spandex instead.