Fallout Boy formed in 2001 in Chicago, it feels like forever ago!
Is that a band?  I have never heard of them
They are! They're american rock, they had an underground success and dedicated fanbase with their first album and now they play in stadiums everywhere
Awesome!  Who all is in the band?
They consist of Patrick Stump, Pete Wentz on bass, Joe Trohman on guitar and Andy Hurley on drums, very good group!
Very nice!  Have they had any hit songs?
Sugar Were Going down from Take This To Your Grave in 2003 was probably their biggest first single