Oh the rawr rawr rawr girl! Her little expression “I wish I was back to a human!” is perfect.
The infinity one and the turtle one seem most scripted to me. Of course, my daughter asked me all about the biggest number when she was 4 and used to tell people about infinity plus infinity all the time, so maybe it isn’t. They just seem to really be acting there, but maybe they are mugging for the camera also. Some kids will do that.
The articles quoted says they film the groups for 4 hours, then edit. The editing tries to stay away from anything that looks staged or forced or stilted or fake.
Sometimes the kids are prompted. The Island Made of Candy was prompted, but the rest was riffing off that line.
The “pickle roll” is clearly a prompt line to tie in to basketball. The kid delivering the line doesn’t understand “pick and roll”. The guy tries to save it, but the kids riff on “pickle roll”, so he runs with that.
Here’s a behind the scenes video with the actor and director. They say they do have scripts for the kids, but they pretty much just wind up using whatever goofiness the kids come up with.
The adult host is named Beck Bennett and the commercials are riffing on his YouTube series called “Fresh Perspectives” which is essentially a political talking heads show, except using kids instead of experts.