Theres no denying that this man has a really remarkable screen presence.

Being a storyteller, I think probably by nature and certainly by craft, I am a watcher.

I think I am an observer.

Its very easy to.

Tragedy can be deeply life enhancing.

Those are the films that I respond to.

Its a very modest contribution I make to this film, my screen time is very slight.

Therefore I wasnt with the team for a very long period of time.

I was parachuted in, I did my job and I left.

I think I was there for maybe a week.

And he accepted it immediately.

That was the starting point.

Its quite a remarkable joke for a family film, the one about the slaves.

Extraordinary to see that in a film for a family audience.

Im not aware of telling a joke.

The irony is that the Pharaoh believes he took good care of the Jews.

For me, thats not a joke.

I didnt approach that as a joke.

I approach that as someone who lives in a bubble who is completely non-empathetic.

Im not aware of that, I havent seen the film.

So no performance capture involved at all.

I dont know whether youve seen that.

My voice in that comes from a different part of me.

I wanted it to, so I recorded my voice for Archibald Snatcher reclining.

It gave me [adopts Snatcher voice] a very Archibald Snatcher relaxed voice like that.

The director said Those vowels that youre stretching, theyre such a gift to the animator.

And also an aspirational voice.

He is a man who desperately wants to join a club that will never have him as a member.

Its desperate, desperate social ambition.

Its exactly what I wanted him to look like.

I give them the voice and the animators… whats it called, motion capture?

A very delicate process, taking ages.

You saw the end credits, didnt you?

Its almost a religious moment.

Thank you, Sir Ben.

Now everybody rush out and pre-orderThe Boxtrollsto see just what it was hes referring to.

Night At The Museum: Secret Of The Tombopens across the UK and US from the 19th December.