Suggestions by @thecastjacker

Mila Kunis

as Harley Quinn in DC Comics Universe

Simon Brodkin

as Multiple Man in Marvel Studios’ X-Men

Kara Tointon

as Pamela Isley in The Batman 2

Steve Coogan

as Jervis Tetch in The Batman 2

Danny Trejo

as Carlos Santana in Madonna Biopic

Diane Guerrero

as Christina Aguilera in Madonna Biopic

Laurence Fox

as Mr. Freeze/Dr. Victor Fries in Batman & Spider-Man

Kara Tointon

as Poison Ivy/Pamela Isley in Batman & Spider-Man

Julian Bleach

as Joker in Batman/Spider-Man

Kara Tointon

as Princess fiona in Shrek

Matt Berry

as Shrek in Shrek

Eddie Marsan

as Oswald Cobblepot/Penguin in HBO's Batman Arkham series

Jenna Coleman

as Barbara Gordon/Oracle in HBO's Batman Arkham series

Matt Lucas

as Julian Day/Calendar Man in HBO's Batman Arkham series

Laurence Fox

as Victor Fries/Mr. Freeze in HBO's Batman Arkham series

Steve Pemberton

as Lazlo Valentin/Professor Pyg in HBO's Batman Arkham series

Mila Kunis

as Harleen Quinzel/Harley Quinn in HBO's Batman Arkham series

Rita Simons

as Harleen Quinzel/Harley Quinn in HBO's Batman Arkham series

Reece Shearsmith

as Jonathan Crane/Scarecrow in HBO's Batman Arkham series

David Tennant

as Edward Nygma/Riddler in HBO's Batman Arkham series