Sealand is most likely the one who decided to have the party in the first place.
The older nations secretly think its so cute watching him dance.
He's pretty good at the game, getting 3 or 4 stars on every song.
He challenges England to see who is the better dancer. The other nations think they look like father and son dancing against each other.
England barely wins. He triumphantly laughs at his victory and Sealand calls him a big bully.