The Monster Association (怪人協会, Kaijin Kyōkai) is a Mysterious Beings group lead by Psykos. Not much is known about it, except that they are the Hero Association's nemesis counterpart.
The Monster Association (怪人協会, Kaijin Kyōkai) is a Mysterious Beings group lead by Psykos. Not much is known about it, except that they are the Hero Association's nemesis counterpart.