Trivia: This episode bares some resemblance to the story of Captain Marvel, also known as Shazam. In it, young Alec Abrams magically turns into an adult, Steven Swift who is the superhero Angel Warrior. Stephen Swift is played by Carlo Marks. Marks appeared in season 7 as Chloe's fiancé in an alternate reality where Kal-El never came to Earth.
Trivia: When Clark saves Oliver he gets a bullet on his eye just like Brandon Routh in Superman Returns.
Other mistake: Lois digs up Chloe's grave site to unearth her casket. It is obvious that the casket is not buried six feet deep. You would think, with all that is going on, that LuthorCorp would have at least buried the casket deeper to deter inquisitive eyes and maybe throw in a few scattered bones for good measure.
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.