Nothing is known about J.C.'s life before the apocalypse.
J.C. is first seen on patrol through Tijuana with his fellow bodyguards, looking for someone. Later, he is seen in the cafeteria at the Gonzales Dam and approaches Daniel after he does not stand up when Dante enters the room. J.C. attempts to give Daniel a hard time but is stabbed in the hand with a fork. Dante intervenes and tells J.C. to step down after he realizes who Daniel is. Later, J.C. takes Daniel and two others on a scouting mission to look for the unauthorized water source and finds Efrain's hideout. Back at the dam, J.C. is in the interrogation room after Efrain is eventually captured. When it is decided that he, Lola, and others are to be executed, he is at the dam's edge with Dante and steps in to throw Lola off the edge. However, Daniel shoots J.C. in the head and throws him over the dam.
Just as J.C. steps in to throw Lola over the dam, Daniel grabs J.C. and shoots him in the head while taking out the other bodyguard. He then throws J.C.'s body over the dam.