Brooklyn-born artist Blake Lethem, better known as KEO or SCOTCH 79, is a veteran graffiti artist who infamously designed and crafted DOOM’s (f/k/a MF DOOM) trademark metal mask.

In a recent sit-down with Frank151, the artist discusses his long standing collaborative relationship with the rapper/producer known as DOOM, where the iconic persona came from, and the evolution of his signature mask, from the first versions to the mask you see today.

In this four-minute interview, Lethem also describes his inseparable friendship with DOOM, and the artist’s influence on the hip-hop world.