Chloe Sullivan is a
fictional character in the
television series Smallville, which is based on the
Superman and
Superboy comics published by
DC Comics. Portrayed by series regular
Allison Mack, the character was created exclusively for
Smallville by series developers
Alfred Gough and
Miles Millar. Other than main character
Clark Kent, Chloe is the only main character to last the duration of the show, though Mack only signed on for five episodes in the tenth and final season. The character has also appeared in various literature based on
Smallville, an internet series, and was then later adapted back into the original Superman comics which inspired
Smallville.