O'Day, who made her mark by joining and then getting kicked out of Diddy's girl group Danity Kane last year and went on to bare her surgically-enhanced assets in the March issue of Playboy, told Sean Hannity and his panel that she has met and "worked with" the Cuban dictator.
"I'm not defending his behavior in many instances but I do have to say I will 100 percent agree he is an incredibly brilliant man," she opined.
When an incredulous Hannity asked her if she knew of Castro's murderous record, she said, "I'm sure I've known a lot of murderers."
Hannity, who presumably had O'Day on his show to tap her knowledge of history and politics, asked her if she thought Hitler was brilliant, too.
"Listen, I don't condone Hitler one ounce, but yes, he was a brilliant man," she said.