Unus's force field first grew beyond his control in Marvel Fanfare (1st series) #7. This apparently led to his death in Peter Parker, the Spectacular Spider-Man #91 as he repelled food, water, and eventually even oxygen. However, he resurfaced alive and well in New X-Men (1st series) #132. After losing his powers on M-Day, Unus seemingly died in Son of M #6, again due to an out-of-control force field this time caused by Quicksilver's Terrigen Mists. He has since resurface again in Spider-Man & the X-Men #1. This was possibly as a result of Selene's techno-organic fueled resurrection of him in X-Force (3rd series) #21.