Isla ng Matututlis (Island of the Outlaws) is one of the lands outside Sansinukob.
The land was described as tropical and with little arable land, so the people relied upon piracy and poaching to survive.
The people were either born there, or in case of Matadora, was exiled there. The land bears little food, so to survive, they either survive by poaching mermaids, called Magindara, or piracy, acting like corsairs. That's why they were called "Cursed People" or "Discarded Peoples of Sansinukob" by other people.