Andy Serkis has said he had to forget a lot of what he learnt from 'The Lord Of The Rings' in the new Hobbit movie.
The actor returns as 'Gollum in The Hobbit: An Unexpected Journey', the first in Peter Jackson's three-part adaptation of the novel.
But his character is 60 years younger than he was the last time Andy played him in 'The Lord Of The Rings'.
"I did have to forget almost everything from 'Lord Of The Rings', because in 'The Hobbit Gollum' hasn't been through any of [the trials] yet," Andy told the Radio Times.
Andy Serkis's Gollum character
"He's less physically scarred in the sense that he hasn't been tortured by Sauron, and he's not come out of the Misty Mountains.
"He's been in this cave, on his own, going crazy - but with the comfort of his "Precious", the Ring, the thing that he loves the most. It's his fix."
Martin Freeman also stars in the film as the young Bilbo Baggins, played in 'The Lord Of The Rings' by Ian Holm.
"When I was having my face cast [for prosthetic ears], I was told that the dimensions of Ian's and my face are almost identical, which they thought was a good omen," the 'Sherlock' star said.
"I think he's got a tiny bit of a wider bridge of the nose. But all our measurements are kind of the same."
The Hobbit Premiere
NZEALAND-ENTERTAINMENT-FILM-HOBBIT(01 of38)
Actress Evangeline Lilly arrives for the world premiere of 'The Hobbit' movie in Courtenay Place in Wellington on November 28, 2012. Huge crowds swarmed into central Wellington on November 28 for the world premiere of Peter Jackson's 'The Hobbit', an event that has sparked Middle Earth mania in New Zealand. AFP PHOTO / Marty Melville (Photo credit should read Marty Melville/AFP/Getty Images) (credit:Getty Images)
"The Hobbit: An Unexpected Journey" World Premiere(02 of38)
WELLINGTON, NEW ZEALAND - NOVEMBER 28: Evangeline Lilly and James Nesbitt, who plays Bofur, arrive at the 'The Hobbit: An Unexpected Journey' World Premiere at Embassy Theatre on November 28, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images) (credit:Getty Images)
"The Hobbit: An Unexpected Journey" World Premiere(03 of38)
WELLINGTON, NEW ZEALAND - NOVEMBER 28: Evangeline Lilly arrives at the 'The Hobbit: An Unexpected Journey' World Premiere at Embassy Theatre on November 28, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images) (credit:Getty Images)
NZEALAND-ENTERTAINMENT-FILM-HOBBIT(04 of38)
Actor James Nesbitt (L) poses with Evangeline Lilly upon arrival for the world premiere of 'The Hobbit' movie in Courtenay Place in Wellington on November 28, 2012. Huge crowds swarmed into central Wellington on November 28 for the world premiere of Peter Jackson's 'The Hobbit', an event that has sparked Middle Earth mania in New Zealand. AFP PHOTO / Marty Melville (Photo credit should read Marty Melville/AFP/Getty Images) (credit:Getty Images)
"The Hobbit: An Unexpected Journey" World Premiere(05 of38)
WELLINGTON, NEW ZEALAND - NOVEMBER 28: Evangeline Lilly arrives at the 'The Hobbit: An Unexpected Journey' World Premiere at Embassy Theatre on November 28, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images) (credit:Getty Images)
"The Hobbit: An Unexpected Journey" World Premiere(06 of38)
WELLINGTON, NEW ZEALAND - NOVEMBER 28: Evangeline Lilly and James Nesbitt, who plays Bofur, arrive at the 'The Hobbit: An Unexpected Journey' World Premiere at Embassy Theatre on November 28, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images) (credit:Getty Images)
"The Hobbit: An Unexpected Journey" World Premiere(07 of38)
WELLINGTON, NEW ZEALAND - NOVEMBER 28: Evangeline Lilly arrives at the 'The Hobbit: An Unexpected Journey' World Premiere at Embassy Theatre on November 28, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images) (credit:Getty Images)
"The Hobbit: An Unexpected Journey" World Premiere(08 of38)
WELLINGTON, NEW ZEALAND - NOVEMBER 28: Evangeline Lilly arrives at the 'The Hobbit: An Unexpected Journey' World Premiere at Embassy Theatre on November 28, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images) (credit:Getty Images)
Yao Chen(09 of38)
Chinese actress Yao Chen poses on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Evangeline Lilly(10 of38)
Cast member Canadian actress Evangeline Lilly waves to audience on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
William Kirchner(11 of38)
Cast member William Kircher who plays Bifur poses on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Peter Hambleton, Jed Brophy(12 of38)
Cast members Peter Hambleton, left, who plays Gloin and Jed Brophy who plays Nori, pose on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
"The Hobbit: An Unexpected Journey" World Premiere(13 of38)
WELLINGTON, NEW ZEALAND - NOVEMBER 28: Director Peter Jackson emerges from from a Hobbit house before delivering a speech at the 'The Hobbit: An Unexpected Journey' World Premiere at Embassy Theatre on November 28, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images) (credit:Getty Images)
Richard Armitage(14 of38)
Cast member Richard Armitage poses on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Barry Humphries, Sylvester McCoy(15 of38)
Cast members Barry Humphries, left, who plays Great Goblin, his wife Lizzie Spender, center, and Sylvester McCoy who plays Radagast, on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Sylvester McCoy(16 of38)
Sylvester McCoy who plays Radagast on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Andy Serkis(17 of38)
Cast member Andy Serkis, right, and his wife Loraine Ashbourne pose on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Barry Humphries(18 of38)
Cast member Barry Humphries who plays Great Goblin on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
NZEALAND-ENTERTAINMENT-FILM-HOBBIT(19 of38)
Director Peter Jackson (R) poses for a photo with his daughter Katie during the world premiere of 'The Hobbit' movie in Courtenay Place in Wellington on November 28, 2012. Huge crowds swarmed into central Wellington on November 28 for the world premiere of Peter Jackson's 'The Hobbit', an event that has sparked Middle Earth mania in New Zealand. AFP PHOTO / Marty Melville (Photo credit should read Marty Melville/AFP/Getty Images) (credit:Getty Images)
NZEALAND-ENTERTAINMENT-FILM-HOBBIT(20 of38)
Director Peter Jackson (R) poses for a photo with his daughter Katie during the world premiere of 'The Hobbit' movie in Courtenay Place in Wellington on November 28, 2012. Huge crowds swarmed into central Wellington on November 28 for the world premiere of Peter Jackson's 'The Hobbit', an event that has sparked Middle Earth mania in New Zealand. AFP PHOTO / Marty Melville (Photo credit should read Marty Melville/AFP/Getty Images) (credit:Getty Images)
"The Hobbit: An Unexpected Journey" World Premiere(21 of38)
WELLINGTON, NEW ZEALAND - NOVEMBER 28: Director Peter Jackson emerges from from a Hobbit house before delivering a speech at the 'The Hobbit: An Unexpected Journey' World Premiere at Embassy Theatre on November 28, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images) (credit:Getty Images)
"The Hobbit: An Unexpected Journey" World Premiere(22 of38)
WELLINGTON, NEW ZEALAND - NOVEMBER 28: Director Peter Jackson emerges from from a Hobbit house before delivering a speech at the 'The Hobbit: An Unexpected Journey' World Premiere at Embassy Theatre on November 28, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images) (credit:Getty Images)
Cate Blanchett(23 of38)
Cast member Cate Blanchett poses on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Peter Jackson(24 of38)
Director Peter Jackson, right, poses with his daughter Katie on the red carpet at the premiere of his new film "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Martin Freeman(25 of38)
Martin Freeman who plays Bilbo Baggins poses on the red carpet for the premiere of "The Hobbit: An Unexpected Journey," at Embassy Theatre in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Hugo Weaving, James Nesbitt(26 of38)
Cast members Hugo Weaving, left, and James Nesbitt pose on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Cate Blanchett, Elijah Wood(27 of38)
Cate Blanchett, who plays Galadriel, left, hugs Elijah Wood, who plays Frodo, on the red carpet for the premiere of "The Hobbit: An Unexpected Journey," at Embassy Theatre in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Peter Jackson(28 of38)
Director Peter Jackson, right, poses with his daughter Katie on the red carpet at the premiere of his new film "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Elijah Wood(29 of38)
Elijah Wood who plays Frodo poses on his arrival for the premiere of "The Hobbit: An Unexpected Journey," at Embassy Theatre in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Hugo Weaving, James Nesbitt(30 of38)
Cast members Hugo Weaving, left, and James Nesbitt pose on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Mark Hadlow(31 of38)
Cast member Mark Hadlow smiles on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Richard Armitage(32 of38)
Cast member Richard Armitage poses on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
James Nesbitt(33 of38)
Cast member James Nesbitt poses on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
Andy Serkis(34 of38)
Cast member Andy Serkis, left, and his wife Loraine Ashbourne pose on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
John Callen(35 of38)
Cast member John Callen smiles on the red carpet at the premiere of "The Hobbit: An Unexpected Journey," at the Embassy Theatre, in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
(36 of38)
Protesters against the death of animals during the filming of "The Hobbit: An Unexpected Journey" display a banner on the red carpet for the premiere of the movie in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
(37 of38)
Protesters against the death of animals during the filming of "The Hobbit: An Unexpected Journey" display banners on the red carpet for the premiere of the movie in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)
(38 of38)
An actor dressed as Shire folk warms up the crowd on the red carpet for the premiere of "The Hobbit: An Unexpected Journey" in Wellington, New Zealand, Wednesday, Nov. 28, 2012. (AP Photo/SNPA, Ross Setford) NEW ZEALAND OUT (credit:AP)