Kelvin worked as brand ambassador and promotional model with Amped Up marketing, SPI marketing, MKTG. Clients he represented: HTC tour and CES, Call of Duty at Comic Con, Getty Images, Honda, J.Crew, Honda, Breaking Bad, Cole Haan, Diet Coke, Dasani Drops, Nautica, Shape magazine, Silk milk, Thrive ice cream, Ender's Game, Dinair makeup, Paul mitchell, Tru Tv, Lion's Gate, NY country clubs, Imagine Dragons, XBOX at E3, Acura, and more.