There is no "Sumo Island." The island that features ancient Japan and a sumo challenge is Red Dragon Island.
(see the related question)
There is no Samurai Island on Poptropica. The island that has ninjas and sumo wrestlers in ancient Japan is Red Dragon Island. (see related question)
The island that has sumo-wrestling in it is the Red Dragon.
You have to beat the sumo westling challenge
first you have to beat the sumo wrestler and then you have to become and ninja and you these special gadgets and then you can climb up the mountain
You can "fight" a sumo wrestler in Red Dragon island and on the free mini game inspired by the island.
how do you beat vampire island on poptropica
You have to beat the sumo wrestler and then he'll reveal himself.
a fat sumo wrestler, when you beat him guards will come an ask you for your passport, bacho will come and rescur you and yeh!
There is currently no Ancient Island on Poptropica.
it is on a island called the magic tree house i think
If you beat an island on Poptropica you should know you beat it because, If you beat it you should get a medal and a few coins! Hope that helps!
you beat it