Mikey Walsh

Brand Walsh

Lawrence "Chunk" Cohen

Clark "Mouth" Devereaux

Andy Carmichael

Stephanie "Stef" Steinbrenner

Richard "Data" Wang

Sloth

Jake Fratelli

Francis Fratelli

Mama Fratelli

Rosalita

Mrs. Walsh

Mr. Walsh

Troy

Sheriff

Prison Guard

Chunk's Father

Chunk's Mother

Data's Father

Mouth's Father

Bill

Troy's Friend #1

Troy's Friend #2

Man in Shower #1

Man in Shower #2

Man in Shower #3

Reporter #1

Reporter #2

Tennis Player

FBI Man

Policeman (uncredited)

Eydie - Chunk's Older Sister (uncredited)

Parent #3 (uncredited)

Cyndi Lauper (archive footage)

Mrs. Wang (uncredited)

Data's Sister (uncredited)

Mr. Perkins (as Curtis Hanson)