Audio problem: In the beginning of the episode, Clark leaves for the Talon to meet with Pete. He is offered a ride by his mother, but says he'll run there instead. As he closes the door behind him, we hear the sound of him taking off in super-speed, but we can still see him through the glass in the door moving down the stairs in normal speed.
Continuity mistake: At the end of the episode, Perry and Clark arrive at the intersection to wait for the bus. They walk out into the intersecting road, and the bus arrives, positioned in the middle of the road, since they are standing in the right lane. Perry and Clark say their goodbyes, and a new shot of the bus from behind, shows the bus is in the right lane only as it starts up from the stop.
Continuity mistake: Just before Clark gets the call from Lana we see inside the trunk of Pete's car. At this point there is a coiled rope in the trunk turned parallel to the rear of the car. When Pete gets the rope for Clark a little later the rope is turned perpendicular to the rear of the car.
Continuity mistake: As Perry and Clark talk for the last time in this episode the sunlight in the scene changes between shots. As they step out of the truck the sun is behind them as they walk towards the road where the bus is going to stop. When Perry turns to face Clark the sunlight, which should now be hitting Perry right in the face, is instead casting a bright orange light on the back of Perry's head.
Factual error: Perry uses a simple black rope to tie himself to the railing by his ankle. This is not a bungee cord of any kind. He falls and is stopped, jerked to a stop actually, with both his weight and the weight of Clark pulling on his ankle. This would cause a very serious sprain if not an actual broken ankle yet Perry shows no signs of being injured when he and Clark walk to the bus.
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.
Audio problem: After Perry explains that the information he has on Lionel is with "multiple attorneys with 'in the event of my death' instructions" Perry tells Lex that the information is "all yours". As he says "all yours" the camera is behind and you can see Perry's mouth say "I just want one thing." but you don't hear Perry actually speak the line until the camera has switched and is facing Perry.
Audio problem: While Clark says "next time I could hurt you or mom." the camera is behind him. As he says "you or mom" his head is turned so that you can see his lips do not match the words being said.
Continuity mistake: When Perry arrives at the Kent's, and they start talking, Clark has his hands in his pockets. After being asked it he's a report, Perry starts to walk around and the shot changes and Clark no longer has his hands in his pockets and is then seen putting them in them.
Continuity mistake: In the previous episode, "Slumber," Clark wrecks the farm truck by falling asleep while driving. The car has massive damage that, at a minimum, would be extremely expensive and time-consuming to repair. Realistically, though, it is completely totaled. In the episode "Perry," the truck is again in brand new condition, like it was untouched.
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.