Susan Lloyd. Ex-girlfriend of Michael. Mother of Walt. Susan left Michael for another man who planned on adopting Michael's son Walt. An attempt to keep Michael out of his son's life. When Walt was a young boy, Susan sadly died from a mysterious illness. Her husband, Bryan, showed up at Michael's home announcing that before her death, Susan had expressed her wish to have Walt live with his birth father. We saw Susan in a few episodes including the episode where we first learn that she is pregnant with Walt. After their break-up, Michael was hit by a car and we see Susan again at the hospital to pay his medical bills.