Smallville Chloe Chronicles

Allison Mack's character Chloe Sullivan has starred in two promotional tie-in series: Smallville: Chloe Chronicles, and Vengeance Chronicles. There were two volumes of "Chloe Chronicles", totaling eleven mini-episodes. The first volume featured Chloe investigating events which led to the death of Earl Jenkins, who held Chloe and her friends hostage at the LuthorCorp plant in the first season episode "Jitters"; it aired between April 29, 2003 and May 20, 2003, and was exclusive to AOL subscribers. After the first volume received positive responses from viewers, the second volume was created as a continuation, but with Sam Jones III appearing as Pete Ross. This volume used the Smallville comic books as a secondary tie-in to the series. Viewers could watch Smallville, followed by Chloe's Chronicles, and finish with the Smallville comic book which would provide an "enhanced backstory to the online segments". The later series, Vengeance Chronicles, is a spin-off of the fifth season episode "Vengeance". In this series, Chloe joins forces with a costumed vigilante, whom she dubs the "Angel of Vengeance", to expose Lex Luthor's Level 33.1 experiments on meteor-infected people.
The idea for an online show centered on Chloe came from Mark Warshaw, who ran the show's website and was in charge of the DVDs; the series was intended to wrap up "unfinished business" from the television show. Although Smallville: Chloe Chronicles first began airing on AOL, it eventually made its way to the United Kingdom's Channel 4 website. According to Lisa Gregorian, senior vice president, television, Warner Bros. Marketing Services, "Our goal is to create companion programming that offers new and exciting ways to engage the audience, just as music videos did for record promotion." Allison Mack describes the show as "very Nancy Drew and mysterious". She continues, "I think it’s a bit more like The X-Files or NYPD Blue. The Chronicles are like a detective story, with Chloe following clues and interviewing people, going from spot to spot, figuring things out." The scripts were written by Brice Tidwell, but Mack was given script approval for the series, allowing her to review and make changes to the script as she saw fit. Warshaw communicated regularly with Gough and Millar so he could find more unique ways to expand Smallville stories over to Chloe’s Chronicles.

Smallville Comic Books

Before the start of season two, DC Comics published a one-shot comic based on the television series. Simply titled Smallville: The Comic, the issue featured two stories. The first, written by Mark Verheiden and Roy Martinez, was titled "Raptor" and featured an abused boy who is mutated into a Raptor, thanks to kryptonite, and decides to seek revenge on the Luthor family. Michael Green and John Paul Leon wrote the second story, "Exile and The Kingdom", which provides insight into why Lex chose to stay in Smallville, after his father offered him a position in Metropolis, at the end of season one. Eventually, DC Comics began publishing a bi-monthly comic featuring various stories involving the characters from Smallville. Writer and script coordinator Clint Carpenter describes the comic book line as a companion piece to the show, instead of a non-canon version of the characters. As Carpenter describes it, the comic book line expands on events occurring in the show, like showing what happens after season ending cliffhangers. Carpenter sees the comics as providing "additional depth" to those characters who receive limited screen time on the show, or whose storylines need additional explanation.
Carpenter was not the first person asked to oversee the comic. Mark Verheiden, who co-wrote the one-shot comic, was originally going to be in charge of the bi-monthly series. Verheiden's commitment to the television series kept him from taking on the comic books, so he asked Carpenter if he would take on the responsibility. Although the series is meant to expand on the events of the show, occasionally there are continuity errors created because of the differences in production schedules between the comic and the show. One such instance occurred when the comic book showed Clark robbing an ATM; then the season three premiere showed him robbing multiple ATMs. The series not only ties into the television show, but also the Chloe Chronicles webisodes, and the various Smallville-related webpages. In addition, the comics feature interviews with the cast and crew, as well as information on the production of the episodes.