Charles Edward Hugo (born February 24, 1974) is an American record producer and multi-instrumentalist. With close friend Pharrell Williams, he formed the production duo the Neptunes in the early 1990s, with whom he has produced songs for many recording artists. He is also a member of the band N.E.R.D., alongside Williams and Shay Haley.

Source: Wikipedia (https://en.wikipedia.org/wiki/Chad_Hugo)