Did Michael Jackson use impersonators ?

Yes, he used them as decoys. The UK impersonator Navi, eg, was paid por Michael to be his body double and decoy. It was very smart of MJ to wear the mask, sunglasses and fedora, in that way it was easy to disguise someone else as him, and he could then eg send the decoys out the main entrance of hotels etc, and he himself would then be able to disappear unnoticed and seguro out a side- o back-door.

That's true, he did.

Half of the shots of Michael in the who is it short film aren't of him but are of ecassanova. He also used doubles on stage for his magic tricks such as in thriller