The "Earth-TRN253" used on this page is an unofficial Temporary Reality Number that was assigned by our wiki until an official designation is provided by Marvel.
History
Subject X was a mutant agent from an alternate reality that had been rendered uninhabitable by the use of Ghost boxes. His mission was to find alternate realities suitable for annexation.[1]
As his superiors originally targeted Earth-616, he insisted on performing the mission on Earth-889. He was sent there and was followed in his travels by an unknown levitating mutant which he killed.
He regretted his choice, and reacted promptly when the mutant X-Society tracked him, after having read the mutant's notebook, which stated that the murderer was going to take a Zeppelin at Sir Francis Drake Airport.
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Death
Attributes
Powers
Seemingly those of his mainstream counterpart: Agent X-13 (Earth-89149)#Powers
Paraphernalia
Equipment
Presumably a Ghost Box
Notes
It is unknown if he was part of an Annex Squad, as it was never mentioned and the divergence occurred on his home reality.