The US isn’t taken seriously by other countries as a competitor for soccer, so therefore the best way to get us to be taken seriously is to liken our players to rapping cartoon dogs*. The more I thought about it, though, the more the character and the slogan make sense for the team. The detail on his hat is the snakeball logo redone in the style of Rodney Greenblatt, Parappa’s creator:
*I’m pretty sure this makes Olsen the Poochie of the WC 23.