Smallville have made a name for themselves around the world in making room for guest appearances from Superman alumni. From a brief stint by the original man of steel, Christopher Reeves, to the credited Annette O'Toole portraying Matha Kent, but who also portrayed Lana Lang in Superman III.
Well they’ve continued their good form, with announcements that Dean Cain from the 90’s Lois and Clark would be making an appearance. But they’ve added to that with a new report confirming that Helen Slater will be making an appearance two weeks after Cain.
Slater portrayed the character of Supergirl in the 1984 movie of the same name. Making her appearance in the sixth episode of the season, Slater will be playing the aunt of the show’s newly cast Supergirl, played by Laura Vandervoort.
In somewhat related trivia, Slater has also voiced the character of Talia Al Ghul in the animated series Batman.