**First Appearance:** #book10 A transitional civilization who happen to be sitting on large deposits of rare earth elements, including osmium, kimberlite pipes, which help to move the materials from deep in the planet to the surface and nickel, copper, cobalt, chromium, lithium, and plenty of other useful stuff. The klostemu people are tribal, have a proclivity for violence, and are easily led in the name of profit. Similar to large, bipedal bats, but monotremes, mammalian creatures that laid eggs, like the terrestrial platypus or echidna.