Apparently, Clark Kent wasn't supposed to be alone on The CW airwaves.

Producers had planned on using "Smallville" as a kickoff point for a new series to be centered around Supergirl, who made a high-profile number of appearances on the Tom Welling show last season, but nixed the idea for reasons that are unknown, even to Lex Luthor.

Laura Vandervoot shared the tidbits at FanExpo 2008 in Toronto over the weekend, an event where The TV Addict was at.

"Vandervoot, who didn't think she'd get the role of Supergirl when she auditioned against a number of actresses with more extensive credits, mused that her role on 'Smallville' was originally intended to lead to her own spinoff series, which didn't work out," reported Melissa Girimonte.

But that doesn't mean there won't be any more Supergirl. Vandervoot said she has been cast in a single episode this season that is meant to tie up her storyline.

The departure of Vandervoot is just one of a number of changes happening on "Smallville" this season, which also included big-name departures including Michael Rosenbaum as Lex Luthor, and Anette O'Toole as Martha Kent, among others over the past couple years.

The eighth season of "Smallville" premieres Sept. 18 on The CW.

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