Conversation so far:
What were some of Euronymous' beliefs?
In interviews, Euronymous claimed to be against individualism, compassion, peace, happiness and fun. He claimed he wanted to spread hatred, sorrow and evil.
Was Euronymous' extreme Satanic image all an act?
Some who knew Euronymous claim that the extreme Satanic image he projected was, in fact, just that—a projection which bore little resemblance to his real personality.
What was Euronymous really like behind the Satanic image?
Mayhem drummer Kjetil Manheim described Euronymous as health oriented ... A nice guy, a family guy.

Question: What was Euronymous' personality like?
Self-contained rewrite: What was Euronymous' personality like?