Jonathan Manu Bennett (born 10 October 1969), is a New Zealand actor. He is known for his portrayal as the Gallic gladiator Crixus in the Starz television series Spartacus. He has also appeared as the orc commander Azog the Defiler in Peter Jackson's three-part film adaptation based on The Hobbit by J. R. R. Tolkien, as supervillain Slade Wilson/Deathstroke in The CW TV series Arrow and as Allanon in the MTV series The Shannara Chronicles, based on the Shannara novel series by Terry Brooks.