Maynard James "MJ" Delfino is Susan and Mike's son. He was born on May 11, 2008. Originally Susan wanted to name him Connor, but later agreed to honor Mike's deceased grandfather, Maynard. Mike's other grandfather was mentioned as being named James, probably resulting in the "MJ" compromise. He was bullied by Juanita Solis, which caused their mothers to have a fight, but this has since blown over and Juanita and MJ have become friends. When Mike began a relationship with Katherine, they take MJ out to the Zoo and bowling, but MJ initially resents Katherine's presence, throwing ice cream at her and dropping a bowling ball on her foot. This is short-lived, however, so much so that MJ begins to prefer the company of Katherine rather than Susan, much to Susan's distress. Mike and Susan work to get him into private school and are successful when Susan takes a job there as an art teacher's assistant. His life is in danger because Dave Williams plans to kill him in order to get revenge on Susan for killing his family. MJ does not die after Susan got through to Dave. MJ is seen as the ring-bearer when Susan and Mike are remarried. He was also unwittingly dragged into Susan and Katherine's feud, when Katherine dared to badmouth Susan to her own son, which angered Mike.