Suggestions by @jdfitzgerald

Cole Sprouse

as Percy in Halloween

Taron Egerton

as Thomas in Halloween

Lacey Chabert

as Emily in Halloween

Dan Falcone

as Arry in Halloween

David Cooke

as Bert in Halloween

Lenny Henry

as Rocky the crane in Fan Casting More Thomas Characters (Classic series only)

Michael Keaton

as Spencer the silver engine in Fan Casting More Thomas Characters (Classic series only)

Cole Sprouse

as Percy the little engine in Fan Casting More Thomas Characters (Classic series only)

James Corden

as Stanley the grey engine in Fan Casting More Thomas Characters (Classic series only)

Rob Rackstraw

as Dodge in Fan Casting More Thomas Characters (Classic series only)

Daniel Radcliffe

as Whiff the rubbish engine in Fan Casting More Thomas Characters (Classic series only)

Hugh Jackman

as Henry the green engine in Fan Casting More Thomas Characters (Classic series only)

Patrick Warburton

as Gordon the big engine in Fan Casting More Thomas Characters (Classic series only)

Tim Whitnall

as Dennis the lazy diesel in Fan Casting More Thomas Characters (Classic series only)

Dane Boedigheimer

as Billy the orange engine in Fan Casting More Thomas Characters (Classic series only)

Kevin James

as Harvey the crane engine in Fan Casting More Thomas Characters (Classic series only)

Bob Goulding

as Splatter in Fan Casting More Thomas Characters (Classic series only)

Jack Black

as Percy in The Annoying Billy

Timothy Dalton

as Skarloey in The Annoying Billy

Kevin James

as Harvey in Thomas and Friends (If it was owned by Hasbro)