amongst the juniors cast, myles brown, bristle palin's son trip and mandla morris. >> my dad is stevier. >> mandla's mentor, cheryl burke. >> i'm not really a dancer. >> that's what the show is about, right? >> from one champ to another, spelling bee whiz akash vukoti. >> i'm new, obviously. dancing is not my field. i wanted to excel in nonacademic fields like dance. >> keep an eye on "avengers: infinity war" star ariana greenblatt and skate boarding sky brown. >> i can really show off my personality, and i get to show america that i have to move. i did a tiny bit of dancing when i was much younger. >> i danced with my dad in the kitchen. >> very cute. >> yeah, it is. >> unlike the grownup version of the show, america won't get to vote on the juniors. the studio audience will be combined with the judges to decide who gets to go home. >> how painful is that going to be when you send the kid home? >>> coming up, which superhero may have quit big screen crime fighting for good. >>> lady gaga surprised her fans in new york. >> we have your very first interview. >> how bradley's star was bo