In the seventh season of Married... with Children, in what appeared to be an attempt to appeal to a more mainstream audience, the producers hired Sweet to play the recurring character Seven. In the story, relatives come to visit the Bundys and stick them with their child, Seven, and were left with the Bundys. However it quickly became clear that the fans were not happy with the new direction or the new character. The writers at first wrote fewer lines for him, and then wrote him out altogether. His disappearance was never explained in the show, although the episode "Rock of Ages" hinted at an explanation. Sweet's last appearance was in the episode "Peggy and the Pirates." His image, however, appeared in two later episodes.

After Married... with Children in 1997 he went on to co-star in the Nickelodeon series The Journey of Allen Strange.

In the early 2000s, Shane was a member of the music group Atalanta. In 2005 Shane formed a new band named "The Celestial Matinee" (grunge/rock/reggae) He toured with his band during 2007.