Okay, Well since I am adding new types of Kaiju in Lightspeed and as I do you can too, I will make a list, then you post which should be added and I will add.
The Original Four:
ED- Earth Defenders
MM- Mutant Menace
GDF- Global Defense Force
AN- Aliens
Added Ones:
DM- Demons
BW- Biological Weapon
ES- Earth
GH- Giant humanoid