Chloe Sullivan - Superman

http://www.kryptonsite.com/smallvillespoilers.htm

UPDATED 3/9/11: More finale appearances: TVLine first reported and it has
been confirmed in a podcast that Allison Mack will be making an appearance as
Chloe Sullivan. Additionally, in an interview at SmallvillePodcast.com, John
Schneider reveals that he, too, has a role in the series' final episode. And
again, those aren't the only people making their returns.

Series Finale Guest Star:

Lex Luther
Jonathan Kent
Chloe Sullivan
Martha Kent(未確認)

--