Continuity mistake: When Adam says "It's nice to be appreciated" Lex is looking at Adam. In the next shot, as Lex says "strange thing is." and now Lex is looking down at the file or piano.
Continuity mistake: After Lionel finds out about the wire that Lex has been wearing, he sits down and tells Lex to get out. As Lex leaves, in the wide shot, Lionel drops his hands down to his lap. In the zoomed in shot Lionel's hands are up to his face as he plays with the wire. There was no time for him to make that move between shots.
Continuity mistake: As Clark is sitting in his barn's loft his mother enters while he watches a model of the solar system. In the shot when he turns it off the large red globe, which looks to be Jupiter, stops well to the right of the model's sun in this shot. When the shot returns to Clark, Jupiter is now partially in front of the sun. Clark had not moved his hand from the off switch so he didn't move the model by hand and the model would have taken longer to make another rotation to put in that position.
Continuity mistake: As Lana gets ready to throw the first ball there is a kid in a red, black and white shirt in the background and he is walking away from the scene. Just after she throws the ball the very same kid is calmly walking behind her again.
Continuity mistake: When Molly first starts flipping through the disks for Lex, she has a ring on her left ring finger. After Lex talks about just getting back Molly is shown still flipping through the disks only now the ring is gone.
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: As the telephone pole crashes falls on Perry's car the sky is bright blue with very widely spread clouds. Clark takes less than two seconds to get Perry out of the car and as he runs away from the car, with Perry in his arms, the sky now has many more clouds than before.
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: 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.
Continuity mistake: Seth fires at Clark and Clark dives behind a ride car to dodge the bullets. As Clark stands up he brushes the impacted bullets off of his shoulder. Seth says "Looks like I'm not the only one with special powers." before he turns to use his powers to pick up a ride car that is behind him. As Seth starts to get the car in the air, in the background you can see Clark is only just standing up and brushing his shoulder off again.
Continuity mistake: When Lex first tries to break out of Belle Reve, he stabs a security guard in the leg with a pencil deep enough to draw a large amount of blood on the guy's pants leg. But when Lex is trying to incapacitate the man you can see the pencil flopping around on the guards leg and not sticking inside the guy's leg.
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: 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.
Continuity mistake: When Clark sees that Jeremiah is in the loft, Clark stands up and closes the book he was reading as he says "What are you doing here?". The very next shot from behind Clark shows that the book is back to being open.
Continuity mistake: Martha asks Clark to come out after he gets glasses. In the shot showing all three of them, Clark comes into view on the left side of the screen and is turned toward his parents. The very next shot shows he is just walking through the door of the optometrist and turned away from his parents as he closes the door.
Continuity mistake: As Emily lies on the ground unconscious after being hit with the water, she is first shown lying there with her right arm bent up and her hand up by her head. After a quick shot of Clark she now has her right hand down by her side.
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: When Lionel Luthor shows Clark the video clip of Belle Reve from the episode "Asylum", Lex says "I know your secret Clark". However, in the actual episode of "Asylum" he simply states "I know your secret", without saying "Clark" at the end.
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: When Lionel and Lex are talking, after they sit down, near the end of the conversation, Lionel asks who Lex's source is. Lex is looking straight ahead. In the next shot, we see Lex turn his head to face his father. In the next shot, Lex is looking straight ahead again.
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.