The Zombie Kid is a piece of internet lore, so it makes sense he's come up periodically over the years, even before the "Teenage Mutant Ninja Turtles: Mutant Mayhem" promo. In fact, Jonathan Ware getting connected to "TMNT" was predicted a while ago during an episode of "Tosh.0." The Comedy Central series would invite internet celebrities on the show for "Web Redemptions," and a few years after the Zombie Kid video came out, he showed up. Daniel Tosh asked him about the video, including how he had just seen a turtle exhibit, so turtles were on his mind despite getting his face painted as a zombie. Tosh eventually brings Ware into a room filled with turtle paraphernalia, and Tosh dresses up like Raphael from the "Teenage Mutant Ninja Turtles" to continue making turtle-themed jokes.
Ware was 13 during his "Tosh.0" appearance, but he's an adult now. Earlier in 2023, The Sun looked into what else he's been up to since his viral video. He started his own YouTube channel called (what else?) "It's Turtle Time." The first video featured him saying hello to his fans which included his famous line, "I like turtles." He ended up acquiring about 1,000 subscribers before shutting it down.
Ware will always be associated with turtles no matter what he does in life. And with a "Mutant Mayhem" TV series and a sequel already greenlit by Paramount, he could have various other promotional appearances down the line. Most likely, after "Mutant Mayhem" comes out in theaters on August 2, plenty of other kids will be saying, "I like turtles."