Suggestions by @mastercasting

Robert Carlyle

as The Doctor in The Authority

Fredro Starr

as The Doctor in The Authority

Shawn Roberts

as Midnighter in The Authority

Chad Michael Murray

as Apollo in The Authority

Keira Knightley

as Jenny Sparks in The Authority

Shazad Latif

as Choreographer in The Authority

Danny Elfman

as Composer in The Authority

Geoff Johns

as Writer in The Authority

Warren Ellis

as Producer in The Authority

Matthew Vaughn

as Director in The Authority

Judd Nelson

as Grendel Prime in Grendel

Robby Benson

as Orion Assante in Grendel

Adam Sandler

as Eppy Thatcher in Grendel

Ross Butler

as Brian Li Sung in Grendel

Emma Roberts

as Christine Spar in Grendel

Jamie Bell

as Hunter Rose in Grendel

Kayvan Novak

as Choreographer in Grendel

Danny Elfman

as Composer in Grendel

Matthew Vaughn

as Writer in Grendel

John Gardner (American Writer)

as Producer in Grendel