Anna Faris struggled to get acquainted with Sacha Baron Cohen while filming The Dictator as the funnyman kept himself "shrouded in mystery."

The actress plays the comedian's leading lady Zoe in the outrageous comedy, about Admiral General Aladeen, the leader of fictional Arab country Wadiya.

However, despite working together for months, Faris admits she failed to forge a close relationship with the Brit.

She tells culture magazine Flaunt, "He's shrouded in mystery. He's hard to just have a casual conversation with. He was always incredibly nice, and such a gentleman, but I still feel like, even having worked with him for four or five months, I still don't really know who he is."

Cohen is known for his larger-than-life personas and very rarely comes out of character for interviews, preferring instead to chat as one of his many alter egos, including Ali G, Borat and Bruno.