Age of Orion
Kaiju translates roughly into Giant Monster. The world has been dealing with occasional Kaiju attacks, recently they’ve all been focused on the Nation of Chakai, which has developed method for combating them specifically. The attacks have slowed over time, it’s become a yearly event for Chakai, and Kaiju are extremely rare outside of Chakai.
Annelid is the scientific term for the worm family. However these Annelids are an invasive parasitic breed that psychically influence the host while taking over their body. These have presumably been wiped out as of 848 CE.
After Cernos set to work reforging the world, some new creatures were created, both beast and monster. Monsters will be added as you discover them.
Skaajan are creatures from the Far Realm, designed for war and usually under the influence or control of an Illithid or an Ancient.