‘This Is Us’ Star Lonnie Chavis Slams Trolls Who Mock His Teeth On Instagram, Lonnie Chavis, who plays young Randall on This Is Us slammed his haters who made fun of his tooth gap. “To all the trolls who have been trolling in my comments, talking about my gap, I could get my gap fixed. Braces can fix this, but like, can you fix your heart, though? There are kids out here killing themselves just because of y’all hating and trolling and doing just crazy stuff … Is it fun? No. It hurts people... Fix your heart, though. For real.” Chavis ended his Instagram rant by telling his fans to believe in themselves. After his post went viral, Good Morning America host Michael Strahan called him an inspiration. tweet The 10-year-old star says that he will continue to keep smiling no matter what!