The Cast of Smallville, (clockwise from top left)
Chloe Sullivan, Lionel Luther, Lois Lane, Martha Kent, Jason Teague, Jonathan Kent, Lex Luther, Clark Kent, Lana Lang


Sam Jones III:Pete Ross (seasons 1-3)
Eric Johnson:Whitney Fordman (season 1)
Patrick Bergin: Morgan Edge (season 3)
Kelly Brook:Victoria Hardwick (season 1)
Patrick Cassidy:Henry Small (season 2)
Jason Connery:Dominic Sanatori (seasons 1 & 2)
Martin Cummins:Dr. Gardner (seasons 2 & 3)
William B. Davis:Mayor William Tate (seasons 2 & 3)
Cameron Dye:Sam Phelan (season 1)
Rutger Hauer: Morgan Edge (season 2)
Gary Hudson:FBI Agent Frank Loder (season 3)
Hiro Kanagawa:Principal Kwan (season 1)
Ryan Kelley:Ryan James (seasons 1 & 2)
Mitchell Kosterman:Sheriff Ethan (seasons 1 & 2)
Rob LaBelle:Dr. Frederick Walden (season 2)
Michael McKean:Perry White (season 3)
Camille Mitchell:Sheriff Nancy Adams (seasons 2 & 3)
Joe Morton:Dr. Steven Hamilton (seasons 1 & 2)
Tom O'Brien:Roger Nixon (season 1)
Sarah-Jane Redmond:Aunt Nell Potter (seasons 1 & 2)
Christopher Reeve:Dr. Virgil Swann (seasons 2 & 3)
Ian Somerhalder:Adam Knight (season 3)
Terence Stamp:Jor-El (seasons 2 & 3)
Emmanuelle Vaugier:Dr. Helen Bryce (seasons 2 & 3)
Paul Wasilewski:Lucas Luthor (season 2)
Robert Wisden:Gabe Sullivan (seasons 1-3)
Françoise Yip:Dr. Lia Teng (season 3)