 They are quite the opposite of their son, providing love and comfort to both Rita and her kids after her separation from Paul.First appearing (played by unknown extras) in the season four finale, taking their grandchildren to Walt Disney World, they return to Miami in the season five premiere, only to learn of Rita's murder.After Rita's funeral, as Astor decides she wants to live with her grandparents, rather than Dexter, Bill and Maura bring both their grandchildren with them back to Orlando.