Michael Rosenbaum is only seen in some episodes of Smallville 's eighth season through photos and stock footage .
In February 2007 , Rosenbaum confirmed that he would be leaving Smallville after season seven of the show , and he did not appear in Smallville season eight , however , in the season eight episode `` Identity '' as well as several other episodes , photo 's and stock-footage of Rosenbaum is seen .