After a cure for the Virus was released, Abyss battled the fire-wielding mutant Fever Pitch in Berlin. Both were captured by the X-Corps militia Ed by Banshee. While being held for scientific study, Abyss witnessed be murder of the Japanese mutant Sunpyre (Leyu Yoshida) by rogue X-Corps members. Following the revelation that the shape-changing mutant terrorist Mystique had infiltrated X-Corps in an attempt to seize assets for her own use, a wounded Banshee freed Abyss from his confinement, allowing him to use his power to pull Mystique into the void Iffin his body.

Later, Abyss was compelled to travel to the Caribbean island of Isla des Demonas, where he joined the X-Man Nightcrawler and other mutants teleportation powers in creating a portal to the other-dimensional home of Azazel, an ancient demonic-featured mutant who was amassing an army to reclaim the Earth. The X-Men came to Nightcrawler's rescue, inadvertently collapsing the portal. Many of the teleporters were killed, but not before all assembled were transported through to the other dimension. Abyss' powers acted in reverse, ejecting everything which the void within his body had ever pulled in, including Mystique. Azazel subsequently revealed that he was the father of the teleporters, allectively referred to as the Neyaphem, and sought to enlist the aid of Nightcrawler in opening another portal to Earth. At that moment, back on Earth, the X-Man Polaris used her magnetic powers to force open the void within Abyss' body, allowing the heroes to return and leaving Azazel and his followers trapped.

Following the advent of "M-Day," Abyss was stripped of his mutant nature and became an ordinary human.

This ability is not limited to living targets. Abyss can absorb projectiles, energy attacks, and debris into his form, effectively neutralizing threats by removing them from the battlefield entirely. Bullets vanish, blasts dissipate, and even large objects can be consumed, making him exceptionally difficult to harm through conventional means. His body simply yields and devours rather than resisting.

Movement for Abyss is equally unsettling. He does not always walk or run in a typical fashion; instead, he seems to glide or seep across surfaces, his form flowing like liquid shadow. At times, portions of his body stretch or distort unnaturally, allowing him to reach distant targets or engulf multiple opponents at once. This fluidity makes him unpredictable in combat, as there is no clear boundary to where his form begins or ends.

Despite the apparent emptiness of his body, Abyss exerts a precise control over the space within him. He can choose what to absorb and, in some cases, release what he has taken, though those who have been drawn inside rarely emerge unchanged. The dimension within him remains largely unexplained, adding to the fear he inspires—even among allies who recognize that his power is as dangerous as it is useful.

In battle, Abyss functions less as a conventional fighter and more as a living trap, a silent and inexorable force that erases threats by pulling them into oblivion. His presence alone alters the dynamics of any confrontation, forcing opponents to keep their distance or risk being consumed by the darkness that defines him.