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History
Malachi was a Space Phantom employed by Immortus in a complex plan to keep the Avengers occupied before the coming of Onslaught.
According to his fabricated history, Malachi and his brother Tobias had been taken away from their true parents by Kang the Conqueror, actually Immortus posing as him, in order to turn them into the heirs to Kang and Mantis' Dynasty.
Tobias and Malachi were sent by their adoptive mother Mantis to capture her former husband, the Cotati Swordsman, again another Space Phantom.
As members of the Anachronauts, Malachi and Tobias clashed with the Avengers several times, and, after having followed the Avengers through a time portal, Malachi rescued Tobias from an alternate past, taking him back to Kang's Citadel by his brother Malachi.
Later, Malachi and Tobias were apparently slayed during their last battle against the Avengers.