Whether it is legal for a human depends on what they are doing. On one extreme impersonating as a parody is clearly legal protected speech, while as impersonati

Whether it is legal for a human depends on what they are doing. On one extreme impersonating as a parody is clearly legal protected speech, while as impersonating to trick people into thinking it is actually her is clearly illegal fraud. Then you have publicity rights that govern the use of ones likeness for commercial purposes, which apply to tools like this, and which have some clear cases and a whole ton of grey area. Judges generally don't care about internal details of the tech involved, instead focusing on the end result, ruling no different than if a human had done the same thing with different tools. The problems come when lawyers convince the judge into misunderstanding what that end result is using false analogies and incorrect explanation of the tech.