Here at Sky Atlantic we 've unleashed our own polar bear on the streets of London

to celebrate the launch of the Fortitude, our most ambitious drama to date.

The fact that there are more polar bears than people in Fortitude,

make them, them, you know, a factor that you have to deal with.

To make a bear like this, it's, it takes a minimum of four weeks.

Then there's like four senior fabricators,

you know, there's this molding department, the sculpting department and, you know,

there are so many different people involved.

We can build the most realistic and believable creatures or animals and

it's, it's up to the puppeteer or performer to actually put the life into it.

We, first of all we took the time to watch a lot of polar bear footage.

That was the first thing. Understanding its characteristics, its behaviors,

foot fall and gait, all that kind of stuff.

But it's beautifully made and it makes our life a lot easier to puppeteer it as well.

The stunt with the polar bear, it's just... I can't wait to see the reactions.

I think it's brilliant.

It looks very realistic to me.

I have to say, I feel a little bit nervous standing here with my back to it.

When I first came up there was no one around it,

so I actually did think that it was real.

And I still can't figure out how it looks so real.

Is it real?

Yeah, I mean if I saw a polar bear walking down the street,

I would, I would start to run.