Growing up, Carter began his acting and singing career at a young age when his mother heard him outside and enrolled him in voice lessons with a voice teacher named Marianne Prinkey. She later got him dance lessons in ballet, tap and hip hop at Karl and DiMarco's School of Theatre and Dance when he was 10. He also did several commercials, such as the Florida State Lottery and The Money Store, talent shows, and the Florida State Fair, auditioned for several acting roles in the late 1980s and early 1990s, and performed around Tampa Bay, FL. As a kid, he described himself as the weird kid, whose friends were the elderly, and was consistently picked on a lot until fourth grade, after his family moved to Apollo Beach, Florida. His first role was the lead role in the fourth-grade production of Phantom of the Opera at Miles Elementary School. His performance was so energetic that he received a standing ovation, with people crying in the audience at how wonderful the boy's voice projected. He also did an educational video called "Reach For a Book," a show called "The Klub" and performed at the Tampa Bay Buccaneers home games for two years. He also made an appearance in the 1990 Tim Burton film Edward Scissorhands as a child playing on a Slip 'N Slide. He stated, "It would be going too far to say I was actually in Edward Scissorhands because I was so far in the background that you can't tell it's me. It would be better to say I was on the set of the film... I was in the scene when Edward looks out of a window to the neighborhood. For a split second, he sees some kids playing - one of them was me. I was sliding on a yellow piece of plastic we used to call a Slip n' Slide. They were long flat sheets with water coming out of holes and were popular with kids at the time. I had to slide on one in the background of a shot. It was great fun being on the set but it was really cold and they made us do it a lot of times".
