I don't know if you want to use something like this, but my tentative back story is the Sadakhan escaped an alternate 19th century Europe becoming increasingly more religious as a reaction to the Enlightenment and Industrial Revolution, planning to settle in Brazil; A few unexplained dimensional portal light shows and really strange and horrible places later and we're in a Sadakoyama hurricane with these weird little tentacled crabs crawling on the deck. Although we like to hint to people we're from space. Sadakhan are kind of dicks in that they will lie to you, expecting you to be smart enough to figure out the facts.