He will voice the streetwise mongrel Tramp, who in the 1955 original falls in love with a pampered Cocker Spaniel named Lady. In the Disney classic, Lady ends up on the street after her owners have a baby. She is saved from a pack by Tramp, who shows her how much fun it can be to be a dog living collar-free. The film features one of Disney's most iconic scenes ever: a romantic spaghetti dinner held in an alley way.

The Lego Ninjago Movie filmmaker Charlie Bean is directing the remake, expected to debut on Disney's upcoming digital streaming service, which launches in 2019. Andrew Bujalski wrote the script for Lady and the Tramp, and Jessica Virtue and Chaz Salembier are overseeing for Disney. Disney has also cast Extras star Ashley Jensen to play Scottish Terrier Jackie.

Theroux next appears in the comedy The Spy Who Dumped Me, which opens Aug. 3. He worked with Bean on last year's Lego Ninjago Movie, and has both Transformers spinoff Bumblebee and Ruth Bader Ginsburg biopic On the Basis of Sex out in December. Last year, he wrapped The Leftovers after three seasons on the critically acclaimed HBO drama.

The actor is repped by CAA; Lighthouse Management & Media; and Felker Toczek Suddleson Abramson.

Collider first reported the news of Theroux's casting.