Continuity mistake: As the two racers speed past Clark and Martha, in the truck at the intersection, Pete's red car does not have its neon lights on in the back window and under the rear spoiler. Then in the next shot, while still racing, both the blue neon lights in the back window and the green neon under the rear spoiler are on.
Other mistake: When Clark confronts Jason Dante and tells him the race is off, one of Dante's thug friends picks up the krptonite/nitrous oxide booster tank and only then does Clark start feeling the effects of the kryptonite. Even though the tank had been sitting out uncovered well before the guy picked it up.
Audio problem: Towards the end of Lex telling Clark about his car, that it was stolen and returned, Lex says "Often that can be the test of a true friendship." After Lex's line the camera switches to show a reaction shot of Clark. In that shot, just before it switches back to Lex, you see Lex's mouth move as if he is saying something but there are no words heard.
Continuity mistake: As the car that Jason was in comes to a stop after the crash you can see Pete's red car is nowhere near the wreckage of Jason's car. In the next shot Pete's car is shown rolling forward to a stop, meaning he hadn't backed up but was still going forward and stopped where he was, but now Pete is only 30-40 feet from the wreck of Jason's car.
Continuity mistake: During the scene when Jonathan comes home from the hospital the length of rolled up sleeve on Jonathan's left arm changes between shots. As Jonathan says "Low sodium turkey?" the sleeve is down to just about touch the watch he is wearing. When the camera jumps to Jonathan's left side, as Martha turns around, the sleeve is now several inches higher and further from his watch than it was before. Jonathan does nothing to his sleeve between shots.
Continuity mistake: In Pete's rearview mirror there is only a couple of hundred feet between Jason's car, which is in the process of crashing at the time, and the bridge. In the next shot of Jason's car almost a mile away from the bridge. Drastically different distances.
Continuity mistake: The field trip is supposed to be on the 39th floor, as stated by Clark and the sign next to the elevator. The view outside the large windows as Lionel is talking shows that they are no more than 5 stories up.
Continuity mistake: As Alicia holds the kryptonite on Clark her hand turns between shots. While she says ".but you broke the rules first." there is a camera change. Before the change the frontal view of Alicia has her holding the kryptonite with the glowing part straight up. After the camera change she is now holding it so it points to her left.
Continuity mistake: While Alicia is in Clark's bed she says "I know you wanted to kiss me, Clark." and while she says this her hand is on Clark's face. The very next shot shows her hand is nowhere near his face.
Continuity mistake: When Alicia confronts Lana in the Talon, when Alicia says, "you're definitely not smarter" Alicia has the knife right on Lana's cheek. When the camera switches to behind Lana, as Alicia says, "You don't have my abilities" the knife is not on her cheek.
Continuity mistake: After Adam says "Look who's talking." you can see Lana raise the notebook she found as she starts to respond when the camera is behind her. When the camera jumps to the other side, facing Lana, the notebook is down instantly between shots and she has to raise it up again.
Continuity mistake: The bomb that Garret wears has four kryptonite section, one at each of the corners, and each section has three distinct pieces. The pieces glow only from the center core and the outer edge is only green colored and is not glowing. When the shot switches to the CG shot of Garret falling, The camera passes over and grabs the bomb and now the krptonite has a uniform glow and there are now the one block on each corner does not have the three individual pieces.
Continuity mistake: Garret is shot in the chest and the bullet is shown as hitting on the right side. Then, in the special effects shots as time is stopped and Garret is in mid-fall, his bullet wound is now on the left side of his chest.
Visible crew/equipment: As the FBI search the Kent's house, you can see the shadow of the camera as it moves from the kitchen to the hallway next to the stairs. The shadow appears on the right side of the arch between the kitchen and hallway. (00:17:50)
Continuity mistake: As Clark jumps the fence, to stop Jonathan from falling, you can see Martha is standing in sunshine with the shadow of the barn well away from her. When Clark actually catches Jonathan suddenly Martha is standing in the shadow of the barn.
Continuity mistake: When the weather vane falls to the ground the rooster portion of the vane gets bent. When Jonathan picks it up and starts to angrily walk away from Martha and Clark it is straightened.
Continuity mistake: As Lana says "I was thinking the same thing but we don't seem to be very good at it." there is a camera change as she says "but". Before the change she only has the red cup on the tray but after the change, even though she didn't pick it up, she has a red and a yellow cup on the tray. The other cup was on the table and jumps to the tray between shots.
Continuity mistake: When Chloe crashes through the bridge rails her windshield is dotted with raindrops. Just a few seconds later the blue truck hits her car from behind and now her windshield is dry.
Continuity mistake: Lex whispers into his father's ear something about keeping secrets. At first the view is of him less than an inch away from his ear. In the next shot he's at least six inches away.
Factual error: Clark lifts Chloe's car by the back. He is only holding on to the very back left portion of the car, yet while he's turning it, the car is completely horizontal. The front of the car would buckle since it weighs so much and isn't being handled by its center of gravity.
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.