Charlie Day is the heart ofthe Mario movie. He plays Mario’s beloved brother, Luigi, and more importantly, he delivers the line that willlive forever as a reply gif. But, joining the denizens of the Mushroom Kingdom shouldn’t mean that Day has to leave his other found family behind. Day is most famous for his role as Charlie on It’s Always Sunny In Philadelphia and there’s plenty of room for the rest of the cast of despicable scum bums in the Mushroom Kingdom.

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Danny Devito side by side with Wario

But, who would each Always Sunny actor play? Danny Devito is obvious casting for a certain greedy doppelganger. But what about Kaitlin Olson, Rob McElhenney, and Glenn Howerton? That’s where we’re forced to turn to science, and this list is based on a combination of each actor’s skills, their screen personas, and the intricacies of their Always Sunny interpersonal dynamics.

Danny Devito As Wario

When Chris Pratt was announced as Mario, the sentiment on Twitter was something to the effect of: “Huh?” After the initial shock had subsided, cries of, “But Danny Devito was right there?!” began in earnest.

I offeredmy own jokey suggestionfor the Mario character Danny Devito could potentially play, but in reality, if the man behind Frank Reynolds can’t be the lead of the Mario movie, he should at least be the lead’s dark mirror image. Pratt is quietly conservative, DeVito is outspokenly progressive. Both got their starts on sitcoms before venturing into leading man roles. DeVito is Arnold Schwarzenegger’s twin, Pratt is his son-in-law. And, maybe most importantly, Wario isn’t that different from the greedy, ethically dubious former businessman DeVito plays on Always Sunny.

Birdo and Kaitlin Olson as Dee

Kaitlin Olson As Birdo

One problem you run into when fancasting a Mario movie is that most of these characters don’t talk much in the games. There aren’t that many important female characters in the Mario universe. Birdo is one of them. You also can’t spell Birdo without “bird,” which the rest of the gang would enjoy.

Of course, if Nintendo could set aside strict brand management and work Bowsette into the sequel, Olson could really have a meaty role on her hands.

Rob McElhenney and Bowser Jr.

Rob McElhenney As Bowser Jr.

As Mac, Rob McElhenney is frequently dominated by Dennis' more powerful personality. But, in McElhenney’s other starring sitcom role as Mythic Quest’s creative director Ian Grimm, McElhenney is the one in control. He contains multitudes.

This makes him a good fit for Bowser Jr. In some scenarios, the kid Koopa is a villain in his own right. But, when his father shows up, he’s revealed as a weak child with no real power. McElhenney has shown that he can play both ends of the spectrum, making him a perfect Bowser Jr. Of course, Bowser will need to stop pining for Peach, settle down, and have a kid if we want to see Bowser Jr. on the big screen. Maybe by the third or fourth sequel.

Dennis Always Sunny and Waluigi

Glenn Howerton As Waluigi

Waluigi is a deeply evil and unrepentant reprobate, repugnant to all people of good moral character. He could be played by none other than the man behind the D.E.N.N.I.S. system.

As Waluigi is the warped mirror image of Luigi, it is only right that the casting mirror that dynamic. Howerton’s Dennis is the smartest member of the group, which still makes him very dumb, but allows him access to deeper insight into how to accomplish despicable schemes. Charlie is the dumbest member of the group, and that foolishness allows him to be the most good-natured. A little knowledge is a dangerous thing and, as the Sunny gang member with the most amount of knowledge, Dennis is very dangerous indeed.

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