Left Brain is an American record producer, rapper, and photographer from Los Angeles. He serves as one of the main producers in Odd Future, having produced portions on nearly all Odd Future releases. He was also one half of MellowHype, along with rapper Hodgy Beats, and a third of MellowHigh with Domo Genesis.

The lateralization of brain function refers to how some neural functions, or cognitive processes tend to be more dominant in one hemisphere than the other. The medial longitudinal fissure separates the human brain into two distinct cerebral hemispheres, connected by the corpus callosum. Although the macrostructure of the two hemispheres appear to be almost identical, different composition of neuronal networks allow for specialized function that is different in each hemisphere.