CHANGELING

Changeling's true name has only been revealed in alternate realities. He was referred to as "Sidney" and "Kevin" in Astonishing X-Men and the Blink limited series, respectively. The Exiles' Morph has also referred to himself as Kevin Sidney.

Changeling's status during Krakoa is uncertain. He was depicted in a crowd scene from X-Force (6th series) #2. However, it was later clarified that Cerebro's back-ups were not ready until sometime after he died. When Wanda created the Waiting Room, mutants from any point in time could conceivably have been resurrected, but its uncertain if Changeling was.