Suggestions by @nicklewandowski

Jeff Daniels

as Commissioner Gordon (2000's) in Commissioner Gordon : Actor's who should have or could play Gotham's Commish

Ed Harris

as Commissioner Gordon (2010's) in Commissioner Gordon : Actor's who should have or could play Gotham's Commish

Tom Skerritt

as Commissioner Gordon. (1980's) in Commissioner Gordon : Actor's who should have or could play Gotham's Commish

Richard Gere

as Commissioner Gordon (2000's) in Commissioner Gordon : Actor's who should have or could play Gotham's Commish

Ron Howard

as Robin (1960's) in Robin / Nightwing : Actor's who should and could have played Dick Grayson

Edward Furlong

as Robin (1990's) in Robin / Nightwing : Actor's who should and could have played Dick Grayson

Josh Hartnett

as Robin (1990's) in Robin / Nightwing : Actor's who should and could have played Dick Grayson

Josh Hutcherson

as Robin (2010's) in Robin / Nightwing : Actor's who should and could have played Dick Grayson

Jason Patric

as Nightwing (1980's) in Robin / Nightwing : Actor's who should and could have played Dick Grayson

Jacob Tremblay

as Robin (2020's) in Robin / Nightwing : Actor's who should and could have played Dick Grayson

Zac Efron

as Robin (2010's) in Robin / Nightwing : Actor's who should and could have played Dick Grayson

Henry Fonda

as Two-Face (1950's) in Two-Face : Actor's who could have or should play Harvey Dent

William Hurt

as Two-Face (1980's) in Two-Face : Actor's who could have or should play Harvey Dent

William Hurt

as Two-Face (1990's) in Two-Face : Actor's who could have or should play Harvey Dent

Sean Bean

as Two-Face (2000's) in Two-Face : Actor's who could have or should play Harvey Dent

Michael Shannon

as Two-Face (2020's) in Two-Face : Actor's who could have or should play Harvey Dent

Humphrey Bogart

as Two-Face (1940's) in Two-Face : Actor's who could have or should play Harvey Dent

Lon Chaney Jr.

as Two-Face (1940's) in Two-Face : Actor's who could have or should play Harvey Dent

Gregory Peck

as Two-Face (1950's) in Two-Face : Actor's who could have or should play Harvey Dent

Laurence Fishburne

as Two-Face (1980's) in Two-Face : Actor's who could have or should play Harvey Dent