Tertullius

"Tertellius, or Savin Kulikov, seems to hate formal occasions, just like his ancestors and his own family, and is a devout Eastern Orthodox Christian, an Old Believer, and even a human from Earth who lived in Surdown, a rural town just outside Walkerville, but within its city proper. I'm sure this guy is so crazed up that he believes that salvation can be done by getting rid the world of formal occasions. Just think that he'll purify it by summoning the greater basilisks that the feds of Gerasecia had made, even for these metamorphosed changelings."

--Su Ji-Hoon, Tertullius (chapter)

Tertellius (real name: Savin Kulikov; Russian: Савин Куликов) is an antagonist in When the Cold Breeze Blows Away. He is the leader of the Monastery of the Sky King. He serves as the primary antagonist of some chapters that take place immediately after the How I Can Help Make the World Great ceremony.

He's also an Old Believer and a devout Eastern Orthodox Christian who lives in a rural village just outside Walkerville, which is called Surdown (but he was born somewhere in Russia, a country on Earth).

Overview
He is the leader of a crazed formal occasion-hating cult based in Walkerville who blames the downfall of civilization on the How I Can Help Make the World Great ceremony, including many other formal events (except the Silbervia Conference). Under the influence of Tertullius' sinister charisma, the fanatics have started worshipping a great and powerful beast that lurks from the other universe.

He and his group, holed up at the Monastery of the Sky King, are enemies of Su Ji-Hoon and his friends.

Acording to a few recordings Ji-Hoon may find around the bridge over Volga, Tertullius was a member of a political party before the USRAC War (though there is no mention of which one, or under what regime), and might have also been incarcerated in a mental asylum for his beliefs.