The Bubble Poppin' Boys were a gang from New Kelp City and appear in the episode "What Ever Happened to SpongeBob?". Only the leader spoke, and he was voiced by guest star Ray Liotta. The gang beat up the people of New Kelp City whenever they blew bubbles. They were flown away in a giant bubble by SpongeBob.
The Bubble Poppin' Boys all have black pompadour haircuts, black leather jackets with their logo on the back, jeans, and black boots. Their leader has orange scales and can make a claw grow out of his pinky finger. Three of the other Bubble Poppin' Boys have similar appearances, yet one has green scales, one has purple, and one has red. Another member of the gang is a yellowish-beige color and he is considerably more muscular than the other members.
Trevor, the leader of the group.
Not much is known about them, though it is known that they scared everyone in New Kelp City into never blowing bubbles. They hated bubbles because when they pop, it stings their eyes. SpongeBob SquarePants sent them out of the city by blowing a giant bubble, trapping them inside as it floated out of the town. When this happened, all of New Kelp City decided to celebrate and blow bubbles. The mayor of the city even decided to resign and give his mayoral post to SpongeBob as a reward. Later, Sandy, Patrick and Squidward brought him back to Bikini Bottom
The leader has the same style of hair as Tony Fast Jr. and very much like Johnny Bravo's pompadour hairdo.
Their hairstyles, the way they dress, and the fact that they introduced themselves by snapping their fingers with tough facial expressions, are obvious references to West Side Story. They are also similar to the T Birds from Grease.
The fact that they're a street gang in an obvious parody of New York City, as well as the fact that their leader is voiced by Ray Liotta, are references to Liotta's work in Goodfellas.