It will be a big improvement over that other Mario movie from the 90s, what do you think of these ideas? 
Mario-Mark Wahlberg (w/o Italian accent) 
Luigi-Robin Williams (Read Mario) 
Bowser-Gary Oldman 
Peach-Amy Adams 
Daisy-Natalie Portman 
Toad-Seth Rogen 
Yoshi-Dana Carvey 
Wario-Jack Black (Read Mario) 
Waluigi-Adam Sandler (Read Mario) 
Professor E.Gadd-Jim Carrey w/German accent 
Donkey Kong-Arnold Schwarzenegger 
Diddy Kong-Chris Tucker 
Kamek-Ray Liotta 
Lakitu-Joe Pesci 
Boom Boom-Sylvester Stallone 
Nabbit-Christopher Walken 
Hammer Bro-Conan O'Brien 
Sledge Bro-Jack Nicholson 
Boomerang Bro-Jeff Dunham... and his friends 
Fire Bro-Martin Scorsese 
Ice Bro-James Woods 
Bowser Jr-Justin Bieber 
Toadsworth-Anthony Hopkins 
with Angelina Jolie as Rosalina 
and Robert De Niro as King Toadstool 
King Toadstool is a ruler of the Mushroom Kingdom, he is also Peach's father 
This will show how the Mario Bros and the Wario Bros ended up in the Mushroom Kingdom 
It will mostly be family friendly, but it will contain dark and dramatic moments like Bowser kills Peach's mother in the beginning when she was 4, Bowser kills her father in the climax, Bowser kills Daisy's parents in a flashback when she was 6, Bowser's backstory will also be depressing, so will Daisy's backstory, and my ending 
Boomerang Bro will have multiple personality disorder, he will constantly change voices, that means you'll also be hearing Walter, Jose, Peanut, Melvin, Achmed, Sweet Daddy Dee, and Bubba J do the voice of the Boomerang Bro 
Bowser will be more entertaining and threatening than he was in the games (which by the way he wasn't either of those in the games) 
This will be the first and only time Peach gets kidnapped, 
It will not just be the Mario Bros who are rescuing Peach but also E.Gadd, Toad, Yoshi, Daisy, Donkey Kong and Diddy Kong (Nearing the end of the second act), and Wario and Waluigi (during the third act) 
I'm also adding a musical number with Christopher Walken and Justin Bieber