DeMarcus is a short 19-year-old male with black spiky hair, aviator sunglasses, a black denim jacket with a Phoenix Suns jersey with the number 82 on it, plaid pants and green trainers.
DeMarcus was born in the town of Anthem, but quickly moved to Tempe, where he met Tayshaun, a guy who would later become DeMarcus's best friend. They both decided to move to California for college and met Etinésa Rodriguez. She ended up being kidnapped and Tayshaun and DeMarcus went to save her. They rescued her and have generally worked together most of the time since.
DeMarcus is generally cocky and doesn't take any "bullcrap" from people. He has a shoot first, ask later mentality.
DeMarcus originally looked much different to what he eventually looks like in they Tayshaun & Amy series.