Continuity mistake: As Chloe and Clark talk about their feelings the shoulder protector/pad of Clark's backpack switches position with no help from Clark. At first it is more in front and showing more than a few shots later, again with no help from Clark by shifting the backpack, it is more on top of the shoulder and not as visible.
Continuity mistake: In the CG shot of the shotgun shot flying in slow motion towards the camera, the blue florescent light that was swinging in the previous shots is gone.
Continuity mistake: As Lois and Clark talk about her leaving, Clark turns to talk to her. Before he turns around the shoulder protector is between his hand and his shoulder and the red side is facing out. In the next shot, even though he made no motion to alter the position, it is now fully on his shoulder with the black side facing out.
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.