"Those West Side Boys sure have some nerve flooding our clubhouse!" ― Tubby
The West Side Boys, colloquially albeit unofficially the West Side Gang, are a group of bullies fighting the Fellers, whom they often targets. These boys are stronger and tougher. Their leader is Butch and Mickey and Spike are other members. More individuals are Mike, Slug, Junior and Guggy. No female member of the West Side gang has ever been confirmed to exist, hence the term West Side Boys, which is often used to describe individual members. The group is Lawful Evil with some Neutral Evil traits and very few Chaotic Evil traits.
Their first introduction in The Little Lulu Show is "The Little Tornado".