Ultra Japan is the home of every ultrahero that exists, except for The Relatively-Ultra-Sulk and Not-Really-Ultra-Red Not-Quite-Ultra-Mage. Ultra Japan is located on a very ultra island ultrawest of Ultra-Illogicainen, that drifts ever so ultra-esque-ly there. It is where MrMetalFLower and HelloolleH were born, in Subbuteo. Ultra Japan has an ultra physical appearance, because it is in the Ultra Realms. Which explains the ultraness of ultra.
Some examples of the Ultra Japanese language:
Engrais -- UltraJapanese
"Hello" -- "I commend your existance, for I am ultra. Bother me not, however."
"Hael" -- "Can someone please speak gramatically correctly. Kthx."
"Speak Ultra Japan?" -- "Yeha, Gibble wong to the dja ké wu. (Someone get this tourist outta here)"
"Sushi platter with Tacofish restaurant sir" -- "I am insinuating that you have poor taste. Leave, immediately."