They have a pretty typical sibling relationship. Starkidd knows what buttons to push, and Maddie flails in response. Ellie comments from above, with the help of Carey, while Bug hides in her blanket fort.
This actually describes us perfectly. Okay…. because after Maddie starts flailing Ellie says something asshole-yish and I jump in either to defend Maddie and be mean back to Ellie, or say something just as assholeish. This may lead to me and Ellie screaming at each other while and then finally both of us realizing the other is not going to budge and then we’ll go back to bugging Starkidd and Maddie. And the whole time Bug is just being cute watching Disney movies