Producers and showrunners behind the scenes include veterans from The Sopranos, Breaking Bad, Game of Thrones and Stranger Things.
The TV adaptation will explore new storylines preceding author J.R.R. Tolkien's "The Fellowship of the Ring", the first installment in the famed fantasy trilogy set in the fictional land of Middle-earth. The Lord of the Rings was named Amazon customers' favorite book of the millennium in 1999 and Britain's best-loved novel of all time in BBC's The Big Read in 2003.
Plans for the new series were first announced by Amazon Studios in November 2017, with United States entertainment trade website Deadline quoted as saying it understands that the global deal is "dwarfing any TV series pact to date with a whopping price tag attached".
Last month, the producers started casting for extras from a pool of almost 5 million people, advertising for people to come forward with "wonderful noses", and "character faces". More details about the series will no doubt start leaking out as production gets underway in New Zealand.
"After undertaking an extensive global search, we are delighted finally to reveal the first group of brilliant performers who will take part in Amazon's "The Lord of the Rings" series", they said.
What are your thoughts on the newest actors to join Amazon's Lord of the Rings series?
The agency added: "HAIR HAIR HAIR - if you have natural red hair, white hair, or lots and lots of freckles".
We'd seen reports about four of the actors - Aramayo, Horvath, Kavenagh, and Mawle - joining the cast of The Lord of the Rings, but Amazon hadn't confirmed their casting until now.
"We are honoured to be working with the Tolkien Estate and Trust, HarperCollins and New Line [Cinema] on this exciting collaboration for television and are thrilled to be taking The Lord of the Rings fans on a new epic journey in Middle Earth". Mawle played Benjen Stark on Game of Thrones and is expected to play a major role in The Lord of the Rings, and now another Stark alum is confirmed to the cast with Aramayo in an unnamed role. Some estimates have pegged the final cost for the series, when all is said and done, at $1 billion or more.