This article [
link to www.todayscatholicworld.com] states some anti-christish stuff... the Great Monarch will:
"He will crush the foes of Christianity."
"He will put out all heresies."
"He will crush the enemies of the Pope."
The last time this happened it resulted in the inquisitions in which millions of true christians were tortured and murdered... as the Anti-christ will do in the last days.
"The Great Monarch will be at war till the age of forty."
"He will go through all Europe with a powerful army, uproot every Republic, and exterminate all rebels."
"He will assist the Pope in the reformation of the world."
"He shall reign over the entire ancient Roman Empire."
"This Prince shall extend his dominion over the whole world."
This sounds oddly like the Anti-christ who will surley conquer and control the whole world.
"He shall destroy the Jewish and Mohammedan sects."
"He will regain Holy Land after terrible wars in Europe."
"He shall reign over the House of Agar, and shall possess Jerusalem."
Also the Anti-christ will conquer Jerusalem and set himself up as God in the temple... of course the prophecy leaves that part out.
Combine this with the evidence of Harlot Babylon of Revelation 18 pointing to Rome, this make the Great Monarch a prime candidate as the Anti-Christ (or perhaps the false prophet)
But this is also true for the 12th Imam so who knows????