“Band name and logo[edit]
The hook-and-cross logo
The Saturn symbol in alchemy
The name “Blue Öyster Cult” came from a 1960s poem written by manager Sandy Pearlman. It was part of his “Imaginos” poetry, later used more extensively in their 1988 album Imaginos. Pearlman had also come up with the band’s earlier name, “Soft White Underbelly”, from a phrase used by Winston Churchill in describing Italy during World War II. In Pearlman’s poetry, the “Blue Oyster Cult” was a group of aliens who had assembled to secretly guide Earth’s history. “Initially, the band was not happy with the name, but settled for it, and went to work preparing to record their first release...”[8]
“In a 1976 interview published in the U.K. music magazine Zig Zag, Pearlman told the story explaining the origin of the band’s name was an anagram of “Cully Stout Beer”.”
https://en.wikipedia.org/wiki/Blue_%C3%96yster_Cult#Band_name_and_logo