During his time at Muir Island, David saved Moira and Wolfsbane from a fatal accident by accessing the telekinetic abilities of his Jack Wayne personality. However, this allowed Jack Wayne to take control of David's body, and he left the island. The New Mutants tracked him down and, after a struggle, convinced Wayne to allow David to again assume control. Soon after, David was possessed by the Shadow King. While under the Shadow King's influence, David killed the mutant Destiny and destroyed 2/3 of the island. When the X-Men and X-Factor defeated the Shadow King, David was again left in a coma.