Kefka is every single major philosophical nihilistic movement there ever was. But his nihilism moved in stages:
is a form of skepticism in which we cannot know what we know.
Happens during: Kefka’s general outlook during the beginning of the game.
also known as ethical nihilism, is the meta-ethical view that morality does not exist as something inherent to objective reality; therefore no action is necessarily preferable to any other. For example, a moral nihilist would say that killing someone, for whatever reason is not inherently right or wrong. In this way, a moral nihilist believes that all moral claims are void of any truth value. An alternative scholarly perspective is that moral nihilism is a morality in itself. Cooper writes, “In the widest sense of the word ‘morality’, moral nihilism is amorality.”
Happens during: The poisoning of Cyan’s hometown Doma.
(also called compositional nihilism) is the position that objects with proper parts do not exist. Only basic building blocks without parts exist. Thus the world we see and experience full of objects with parts is a product of human misperception.
Happens during: One Kefka states gaining stronger magical abilities.
a branch of nihilism, follows the characteristic nihilist’s rejection of non-rationalized or non-proven assertions; in this case the necessity of the most fundamental social and political structures, such as government, family, and law. The Russian Nihilist movement was a Russian trend in the 1860s that rejected all authority. Their name derives from the Latin nihil, meaning “nothing”.
Happens during: The Floating Continent.
is the philosophical theory that concrete objects and physical constructs might not exist in the possible world. An extreme form of metaphysical nihilism is the belief that nothing exists as a correspondent component of the self-efficient world. A skepticism similar to solipsism; however, the nihilist would deny the self whereas the solipsist affirms nothing but.
Happens: Once Kefka becomes a god.
is the belief that life has no intrinsic meaning or value.
Happens during: The party’s final showdown with Kefka.
I believe Kefka’s gained more nihilistic philosophies as the game progresses.