I see Korea's normal attacks as some cross between break-dancing and kpop parapara. And for his final (or whatever it's called) he flips out shouting "ANIKIIII D<" and molests everything in his path.

Estonia has pop-up blocker and firewall type magical attacks. His final is something dorky like a system meltdown or somethn.

Sealand's attacks are very bouncy and all over the place. In the end, he summons giant mecha shouting "Acknowledge me!" and everything ends in a beautiful explosion of malfunction.