As with the mini-shopping spree, there was still some thrill in needing to go undercover. “At the beginning of this year, I used to walk through the local mall and say, ‘One day, I’m not going to be able to walk through this mall,’” Lil Yachty said later in the privacy of a Caribbean restaurant, his hair since released. “No way I could walk through the mall now. Unless I’m hiding.”

Last winter, the teenager born Miles McCollum, who had recently dropped out of college and had been arrested in a Florida mall for credit card fraud, was hoping to shake his anonymity. Rapping was a relatively new pastime (it still is), though striving for fame came naturally to a diligent student of social networks.

“I always knew I was going to be something,” he said. “I didn’t know what.”

Now, at the end of a career-making 2016, Lil Yachty seems more certain. “I’m not a rapper, I’m an artist,” he said. “And I’m more than an artist. I’m a brand.”

The stats back him up. In addition to releasing the popular “Lil Boat” and “Summer Songs 2” mixtapes, filled with his taffylike digital wails and cartoon melodies, and reaching No. 5 on the Billboard Hot 100 with his sweet-and-sour guest verse on D.R.A.M.’s “Broccoli,” Lil Yachty has modeled Kanye West’s Yeezy line at Madison Square Garden, starred in a Sprite commercial with LeBron James and teamed up with Nautica on a capsule collection for Urban Outfitters. An official debut album with Capitol Records is planned for early 2017.