Roger was the son of Niles in the Season 7 episode A Pox on Our House. He was portrayed by actor Aaron Refvern.
Roger was with Julie when she was exposed to a medical sample jar that she obtained from an old shipwreck.
When Julie was admitted to hospital, Roger was put in an isolation room with Niles and Lulu, his father's girlfriend.
Niles soon got ill as well and grew worse faster than Julie. He was soon near death. As he was about to die, he got Lulu to promise to take care of Roger.