X-Men Milestones: Onslaught #[nn]

In a tense, shadowed tunnel, Bishop leads his team in a high-stakes pursuit of Trevor Fitzroy, only to be confronted by a chilling playback of Jean Grey’s voice—her recorded message hinting at the death of Professor X, leaving the truth shrouded in mystery. With Malcolm and Randall at his side, Bishop must decipher the message’s meaning while Fitzroy’s motives remain as elusive as the echoes in the tunnel.

In "False Fronts," Jean Grey finds herself trapped in the astral plane as Onslaught weaponizes her doubts, twisting memories of Professor X’s past to challenge the very foundation of the X-Men’s ideals. With Cyclops, Beast, and the others watching helplessly, Jean must confront the fractured legacy of Xavier’s dream—while Onslaught, masked in a Magneto-like guise, grows increasingly furious at her defiance.

Jean Grey helps Juggernaut confront a mental block that could reveal the truth behind Onslaught, but when the villain captures him and seizes the Gem of Cyttorak, the X-Men face a shocking revelation—Professor X is Onslaught. Amid the chaos, Beast escapes from Dark Beast’s prison, and the team must unravel the mystery before the truth destroys them all.

History Repeats Itself [excerpt] finds the Avengers—Captain America and the Wasp—locked in a desperate fight against spectral echoes of their past enemies, as Loki’s dark portal threatens to consume the planet. With reality unraveling, the fate of Earth hinges on a single, unexpected figure: Edwin Jarvis.

In "Traitor to the Cause," Xavier’s true allegiance is revealed as the combined forces of Professor X and Magneto unleash the monstrous Onslaught upon the X-Men. With the team reeling from the betrayal and the world watching, the surviving mutants must confront the terrifying truth behind their mentor’s transformation—before the city, and the mutant cause, are lost.

In the ashes of the X-Mansion, the Avengers and X-Man arrive to find a shattered sanctuary and a team of X-Men emerging from the woods, shaken but resolute. With the psychic shadow of Onslaught—born from the fused minds of Professor X and Magneto—looming over the wreckage, the heroes must piece together the truth before the entity’s power consumes them all.

In "Sins of the Father!", Gambit teams up with the Avengers—Captain America, Thor, Vision, Scarlet Witch, Iron Man, and Quicksilver—to uncover the truth behind Onslaught, tracking Magneto through a web of deception. When they intercept Rogue and Joseph in Virginia, a tense confrontation erupts, only to reveal a shocking mix-up that forces Joseph to join their mission.

In the shadow of a fractured mind, Wolverine and Elektra seek answers at Gateway, where they witness a chilling memory: the moment Professor X severed Magneto’s consciousness—just after Magneto had torn the adamantium from Wolverine’s bones—setting the stage for the birth of Onslaught. The past bleeds into the present as echoes of the Hand, Mariko, Gambit, and the Silver Samurai flicker through the fractured timeline, each a ghost of what might have been.

In the heart of a shattered New York, Franklin Richards fights to reach Professor X inside Onslaught’s twisted citadel, while the Avengers, Fantastic Four, and X-Men race to breach the fortress from the outside. As Joseph confronts the monstrous Onslaught and frees Xavier, the villain’s power surges—unleashing a cataclysmic explosion that shakes the city to its core.

Apocalypse and Cable venture into the astral plane to face Onslaught head-on, but the battle takes a dangerous turn when Invisible Woman arrives, determined to protect her son Franklin from Onslaught’s twisted designs. The confrontation ends with Onslaught effortlessly casting them all out of his fortress, leaving the fate of the team—and Franklin—uncertain.

In "With Great Power...", the X-Men stand at the forefront of a desperate alliance as Earth's mightiest heroes—Avengers, Fantastic Four, and more—join forces to confront the overwhelming threat of Onslaught. With the fate of countless lives hanging in the balance, the battle tests the limits of power, sacrifice, and unity across the Marvel Universe.

In "Know Thy Enemy," Wolverine confronts Professor X about the weight of responsibility following the Onslaught catastrophe, forcing a raw, personal reckoning between two icons. Amidst the tension, the X-Men try to reclaim a sense of normalcy—laughing, sparring, and leaning on each other as they navigate the aftermath.

Beast reconnects with Trish Tilby as tensions rise, while Bastion makes a chilling visit to J. Jonah Jameson. Val Cooper arrives to arrest a powerless Professor X, who quietly agrees to be taken into custody—facing the consequences of his role in the Onslaught crisis.