Attenborough is an interesting example because he had a real life near-analogue. He had a famous brother, Richard Attenborough (John Hammond in Jurassic Park).

Attenborough is an interesting example because he had a real life near-analogue. He had a famous brother, Richard Attenborough (John Hammond in Jurassic Park). Their voices were extremely similar and they of course looked much the same. David is more famous now but back in the 1990s Richard was more recognizable. Who owns the voice? Does it default to the person who is most famous at a given moment? How often to we revisit that? Do the brothers battle it out in court to see which is allowed and which forbidden to do voiceovers using the "Attenborough" voice? And the Olsen sisters... that's a legal quagmire.