She was raised in the Rancho Penasquitos neighborhood of San Diego, California.
In 1993, Del Mundo graduated from Mount Carmel High School where she wrote for the school newspaper and participated in student government. She went on to study communications at Cal State Northridge.
She worked for the Disney Channel as a voice host and has been featured in several television commercials. Additional voice work includes Wendy in Danger Rangers and Polaris in Wolverine and the X-Men.