Bacterian
is a fighter who joined in the tenkaichibudakai. He is known as the smellist fighter in the world. He has never taken a bath or brushed his teeth in his entire life. He uses his horrible stench to his advantage in fighting as it makes others near him sick.
For this cache Bacterian has hidden in a nice but dirty place with a few of his fellow non-bathing muggle friends. You must avoid the eyes and stench of those muggles as you find the cache hidden amongst some rocks. There are hundreds of rocks and places to look, so don't give up.
Once you find him and manage to defeat him you can get important information on winning the tenkaichibudokai.
Congrats to Everyday Explorers for the FTF