The monster looks like a rather deformed Squidward with missing teeth and plus-shaped pupils. It also appears to be a bit overweight and seems to have a shriveled-up nose and a flabby head. Unlike Squidward, the monster does not have any clothes on and appears to be bigger than most life forms in Bikini Bottom.
Role in episode
It is one of the plans concocted by SpongeBob and Patrick in order for Squidward's audition to be heard at the Philharmonic Concert Hall. However, it ends up failing when the Lab Squidward smashes out of the lab and starts causing havoc in Bikini Bottom.
At the end, he is seen playing a clarinet in front of a group of fish in the middle of the chaos he created.