A nation on the eastern coast of Cantabria, Xar was a place of evil and chaos ruled by The Group of Six. After the demons of Xar tried their failed invasion of Sejanna by taking out Monrovia and heading inland to Lor Susshro, The Group of Six were deposed/slain and replaced by the Invested Triad (aka The Three in Red). They realized that the Heroes of New Crucibal were responsible for beating the demons back and sought to avenge themselves by seeking out the heroes and destroying them once and for all.
Needless to say, this attempt failed.
Not much else is known about Xar since no one has any desire to go there.
Today, however, no word or sailing ship comes from Cantabria so their fate is unknown.