Fall Out Boy is an American rock band formed in 2001 in Wilmette, Illinois. The group consists of lead vocalist Patrick Stump, bassist Pete Wentz, guitarist Joe Trohman, and drummer Andy Hurley. They gained popularity in the mid-2000s with their energetic sound and catchy melodies, blending elements of pop punk and emo. The band is known for hit songs like "Sugar, We're Goin Down" and "Thnks fr th Mmrs," which helped define the pop punk genre during that era. Over the years, Fall Out Boy has released several successful albums and continues to tour, maintaining a dedicated fan base.