Des Griffin is an anti-Masonic, anti-Semitic, and anti-Catholic writer and New World Order conspiracy theorist. He is one of Jack Chick's go-to sources for anti-Catholic material as well as general conspiracy theories. Griffin's work has also been promoted by Kent Hovind and Henry Makow, and it is also not hard to spot his books being sold by both Christian Identity and Islamic booksellers (Griffin's writings of interest because of a shared hatred of Jews, the Catholic Church, and Freemasonry). He has been featured on wingnut preacher Peter J. Peters' Scriptures for America radio program discussing Martin Luther King, Jr.
Griffin's best known books are Descent into Slavery? and Fourth Reich of the Rich. The latter of these is focused on the general theme of an international Jewish conspiracy led by the Rothschild family in cahoots with the Vatican and Freemasonry to pick up where the Nazis left off, and includes a promotion of the hoax document, the Protocols of the Elders of Zion. Nonetheless, check the footnotes on some of Jack Chick's Crusader comics and what book do you see him citing as a source? Fourth Reich of the Rich.
Griffin's work is derivative of an earlier presentation of the Illuminati conspiracy theory of history, Pawns in the Game by William Guy Carr.