Right of publicity. Profiting of their image without their permission will get you sued. Even if you use an impersonator. If there is a chance the public will connect it with them, you are probably screwed.

e.g.

Vanna White vs Samsung - https://w.wiki/AAUR

Crispin Glover Back to the Future 2 lawsuit - https://w.wiki/AAUT#Back_to_the_Future_Part_II_lawsuit