Suggestions by @computeyd

Aaron Paul

as Blackavar in Watership Down

Charles Martin Smith

as Blackberry in Watership Down

Mara Wilson

as Thrayonlosa in Watership Down

Mark Wahlberg

as Buckthorn in Watership Down

Martin Sheen

as Threarah in Watership Down

Shia LaBeouf

as Blackavar in Watership Down

Judd Nelson

as Bigwig in Watership Down

Judd Nelson

as El-ahrairah in Watership Down

Elijah Wood

as Silverweed in Watership Down

Woody Harrelson

as Speedwell in Watership Down

Ethan Hawke

as Fiver in Watership Down

Hayden Christensen

as Captain Campion in Watership Down

Tom Atkins

as Toadflax in Watership Down

Ansel Elgort

as Fiver in Watership Down

Russell Crowe

as Captain Mallow in Watership Down

Vin Diesel

as Buckthorn in Watership Down

Holly Hunter

as Clover in Watership Down

Billy Bob Thornton

as Captain Chervil in Watership Down

Billy Bob Thornton

as Buckthorn in Watership Down

Dwight Yoakam

as Vervain in Watership Down