Other mistake: Throughout the series, they reuse the same footage for establishing shots of the Talon. For example, one of the shots has the Talon sign say "Silent Film Festival" with a guy holding and bouncing a basketball as they walk pass the Talon is in s02e05 and s03e11 and other episodes, including s03e10 where it's the same people but the guy is holding his jacket and further back.

Smallville (2001)
1 other mistake in show generally - chronological order
More mistakes in Smallville
Martha Kent: Clark? What are you still doing out here?
Clark Kent: Well, I'm still doing my chores.
Martha Kent: Well, you usually finish those in about two minutes. How is it that I drove to Metropolis, attended the Children's Foundation dinner, and made it back before you finished?
Clark Kent: Because I'm doing them the normal way.
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Answer: No, there is no such character in the comics. He's a "meteor-freak" like all the other baddies on the show. The sound has something to do with him vibrating his vocal cords very fast to create a high-pitched squeal.