Xavier eventually becomes imprisoned by the Skrulls during their attempted invasion of the Shi'ar Empire. Xavier breaks free from imprisonment by Warskrull Prime, and is reunited with the X-Men. A healthy Xavier returns from the Shi'ar Empire and is reunited with both the current and original X-Men teams, and resumes his leadership responsibilities of the united teams. In a battle with his old foe, the Shadow King, in the "Muir Island Saga", Xavier's spine is shattered, returning him to his former paraplegic state, while his son David is seemingly killed. In the following months, Xavier rebuilds the mansion, which previously was rebuilt with Shi'ar technology, and restructures the X-Men into two teams.