Hildén was born Olivia Gonzales in Houston, Texas. At the age of 6, Gonzales enrolled at a local dance studio and was trained as a ballet dancer. Three years later at a dance event she attended, Gonzales witnessed a hip hop dance crew for the first time. One of the crews there was Marvelous Motion, whose members (Phillip Chbeeb, Di Zhang and Brandon Harrell) would later become her fellow crew members in I.aM.mE. Gonzales became immediately intrigued and decided to participate in hip hop from then on. She enrolled at Lanier Middle School where hip hop was one of the dance styles taught. Shortly after, her mother located the Marvelous Motion Studios and enrolled her in a few classes.
In 2010, after the disbandment of Marvelous Motion, its three members Phillip "Pacman" Chbeeb, Di "Moon" Zhang and Brandon "747" Harrell held an audition to create a new crew, I.aM.mE. Added to the lineup were the three new members: Olivia "Chachi" Gonzales, Emilio "Millie" Dosal, and Jana "Jaja" Vaňková in preparation for America's Best Dance Crew: Season of the Superstars. Gonzales was the youngest member of I.aM.mE.
