Cuoxur

Cuoxurs are probably the oddest creatures found on Sejan. In addition to their highly unusual shape, their means of defense and reproduction are strange, to say the least. To fend off enemies, they use disorientating, highly damaging sonic attacks that vibrate the air and leave ringing in ears of those in vicinity for dozens of minutes.

Their way of procreation is even more unique: All Cuoxurs have many tiny little cavities on their tops. During mating, they rub their backs together and release ooze from these pores that then forms into the shape of genitals. It is currently unknown if one retains its sex or can switch genders, but the former seems more likely; however, more research is necessary.