Morris Sackett was a professional basketball player who encountered the wandering Terrigen Mist circling the Earth, and was transformed into the Inhuman known as Mosaic, via Terrigenesis.
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History
No longer possessing a physical body, Morris Sackett discovered he could enter into the bodies of others, assuming control and becoming something of an infiltration specialist.
After learning to use his abilities, Mosaic penetrated the security measures of a secret S.H.I.E.L.D. installation in Manhattan, ultimately occupying Agent Melinda May's body and stealing Field Director Phil Coulson's personal S.H.I.E.L.D. Flying Car, taking Lola for a joyride through the skies of New York City.
Wanting to be solid again, Mosaic and his friend Fife traveled to the former spot in the Himalayas where the Inhuman city of Attilan was located, believing that it contained the means to restore Mosaic's body.