Hal Donell Williams, Jr. (born November 11, 1991), better known by his stage name Pyramid Vritra, is an American rapper and record producer based in Los Angeles, California.

When he was in high school in Atlanta, he founded the hip hop collective NRK (Nobody Really Knows) and subsequently linked up with Matt Martians of Odd Future after Martians heard NRK’s tracks on Myspace. When Pyramid Vritra and Matt Martians met, they naturally clicked and the collaborations began. They formed The Super 3 production group, and soon after, he and Martians formed the The Jet Age of Tomorrow.