Trivia: Some episode intros feature a shot of Gambit cradling Rogue on the basketball court, and she proceeds to cover his mouth with her hand and then kiss her hand. This is recreated from a panel in X-Men #4, though in that panel, Rogue punched Gambit in the mouth instead of giving him a simulated kiss.
Deliberate mistake: When the news program is discussing Gyrich's assassination attempt on Xavier from the series finale of the original animated series, he's shown to have his classic look of auburn hair and sunglasses. However, when this scene occurred, Gyrich had black hair and was not wearing sunglasses. This was done deliberately to match the character design of the original series prior to the final 6 episodes, when Saban took over and redesigned much of the show's look.
Mutant Liberation Begins - S1-E2
Madelyne Pryor: [In labor pains] Logan, he's, he's here!
Wolverine: Who? Apocalypse?
Madelyne Pryor: The baby!
Wolverine: Oh, crap!