These grotesque creatures hate all life and won't stop until everyone who escaped the Cataclysm is destroyed! They appear like sea creatures at first glance, but they are not...
A private and exceptionally mysterious academy of Math, Medicine, and Engineering; it only invites students to apply every few years, and the "lucky" few who get in are then put through the hardest 4 years of their entire life - if they make it that long.