Morris Sackett was a professional basketball player until the point when the Terrigen Mists transformed him into Mosaic and it was revealed that he was an Inhuman.
Mosaic was created by Geoffrey Thorne but first appeared in Uncanny Inhumans issue 11 (2016)
Major Story Arcs
Civil War II
Mosaic was recruited by Medusa because of his unique ability to transfer his consciousness from host to host. While doing so, he takes all their memories for however he is in use of their body. Medusa utilized this power and had Mosaic take the form of Iron Man's financial manager and transfer away all of his funds.