(KRON)—Facebook CEO Mark Zuckerberg is looking for someone to be the voice of his new virtual assistant, A.I. Jarvis.

Robert Downey, Jr., who plays the role of Iron Man in the Marvel series, jumped at the opportunity.

The actor says he’ll do it, but there are a few conditions.

He wants Zuckerberg to pay the fees to Paul Bettany who plays Jarvis, the voice of Iron Man’s virtual assistant in the movies.

Bettany would then have to donate the funds to a charity chosen by Benedict Cumberbatch.

Cumberbatch plays the leading role in “Doctor Strange” which is the newest Marvel movie.