U.S. actor Ed Asner, Betty White's former "Mary Tyler Moore" co-star, will appear on an upcoming episode of "Betty White's Off Their Rockers," NBC said.

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The hidden-camera comedy show features senior citizens pulling pranks on unsuspecting victims.

Fresh episodes are to begin airing Tuesday.

Asner will be the special guest in the final episode of Season 2, which is scheduled to air July 9.