10 More Actors Who Made Sure They Weren't Seen In Movies

10. Billy Bob Thornton - U-Turn

For his role in Oliver Stone's 1997 neo-noir U-Turn, Billy Bob Thronton didn't spend hours in the makeup chair to drastically transform himself, but rather covered his face in grease and motor oil, wore a backwards baseball cap, threw on some specs, and had his teeth painted brown.

Even with Thornton's southern drawl being as distinctive as it is, you'd be hard-pressed to instantly recognise him as the seedy mechanic Darrell, whose interactions with Sean Penn's protagonist Bobby Cooper are one of the movie's easy highlights.

To further disappear into the role, Thornton additionally gained 50 pounds of weight to give Darrell an extra heft, ensuring his gut constantly billowed out below his dirty vest.

In an interview ahead of the film's release, Thornton also stated that he chose to speak without letting his lips touch, which subtly altered his speaking pattern and made his teeth appear even more prominent.

Adding all these affectations up, and it's incredibly easy for the audience to totally divorce the mechanic from Thornton in their mind.