At long last,Brian Coxcomes to Middle-earth.

Much of what we know about Helm comes fromJ.R.R.

Tolkien’s appendices toThe Lord of the Rings, in which he describes the history of Rohan.

The Lord of the Rings: The War of the Rohirrim

Helm Hammerhand (Brian Cox) in ‘The Lord of the Rings: The War of the Rohirrim’.Warner Bros.

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How did she live?"

Boyens toldEntertainment Weeklyearlier this year.

Watch the featurette above for more.