High Potential just confirmed Mekhi Phifer isn't Morgan's ex, Roman - so who does he actually play? During the Tuesday, September 22, episode of the hit ABC series, Morgan (Kaitlin Olson) thinks Daphne (Javicia Leslie) and Oz (Deniz Akdeniz) found Roman after a lead brings them to Nevada. While there, they tail a man (Phifer), only to discover - after sending a photo to Morgan - that he is not, in fact, Roman. The man won't tell Daphne and Oz who he is, but he does track down Morgan. Arthur introduces himself as a friend of Roman's, who was asked to check in on Morgan and Ava (Amirah J).