Home People Bryan "the brain" Mantia Bryan "the brain" Mantia movies Bryan "the brain" Mantia movies Bryan "the brain" Mantia Movies (3) Detention (2011) As Original Music Composer. He was 48 years old Bill Laswell - World Beat Sound System: Live at Soundstage (2005) As Musician. He was 42 years old Brain's Lessons: Shredding Repis on the Gnar Gnar Rad (2002) As himself. He was 38 years old