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Luigi Likes to Cross-Dress

Back in the day, Nintendo Power created awesome comics for fans. One of these featured Luigi and Peach swapping costumes.

When Peach wanted to switch back, Luigi confessed that he liked wearing her clothes. This led to fans thinking Luigi liked to cross-dress or wasn't comfortable leading life as a man.

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Luigi Died by Suicide

What if Luigi is actually dead? This is what many fans of Luigi’s Mansion believe.

In the original game, whenever lightning would strike the Telephone Room, you could see a silhouette of Luigi’s body hanging in midair.

The fan conclusion is that he hanged himself and is just another ghost within the game.

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Darkest Luigi

Luigi eventually got his own platformers with the game New Super Luigi U.

To advertise it, Nintendo released an insane ad where a cowering and crying Princess Peach is absolutely terrified of the sight of Luigi.

Because of this, some fans think he's resentful of the Princess and has evil plans for whenever he gets her alone.

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Luigi’s Mansion Is the Final Adventure

Remember the “Luigi is dead” theory? You might wonder how that stacks up to Luigi being in all these other games.

One theory is that Luigi’s Mansion is canonically the final adventure for Luigi, but it’s tough to reconcile this theory with the direct sequels to that game.

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Luigi Has PTSD

Some of Luigi’s personality traits include him being timid and easily frightened. But what if there was a traumatic cause for this?

Some fans believe Luigi has PTSD since he was kidnapped by Kamek and thrown in a cell back in Yoshi’s Island. In short, all those encounters with other Koopa foes keep triggering poor Luigi.

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Donkey Kong Killed Luigi's Dad

What if the dude in Donkey Kong isn't Mario? A few fans have theorized that the human in those games was actually Mario and Luigi’s dad.

Considering we see that human fall and die at the end of Donkey Kong, Jr., it looks like Luigi’s dad may have been killed by junior (who is the same Donkey Kong you see in games like Mario Kart and Smash Bros.).

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Luigi Is the Reincarnation Of Count Bleck's Great Grandfather

What if Luigi is more than he seems? The events of Paper Mario have long had fans convinced that Luigi is actually the reincarnation of Count Bleck’s great grandfather.

This led to further theories that Luigi is hiding immense power (more on this later).

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Luigi’s Biggest Fan Is Waluigi

Ever wonder what’s up with Waluigi? While we get origins and background info for Wario, Luigi’s weird doppelganger just sort of showed up in Mario Tennis and stuck around.

Some fans think he is just a Luigi fanboy who went overboard and now can’t stop hanging around Luigi and his pals.

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Luigi Is Just An Actor

What if you never got to see the real Luigi? The events of Super Mario Bros. 3 imply that Mario and Luigi are actors acting out a stage play.

Believe it or not, this is one of the few fan theories that Mario creator Shigeru Miyamoto has implied may be true.

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Luigi Is the Strongest

If you pay close attention to several side stories, Luigi seems to have a weird array of powers.

As the (implied) reincarnation of Count Bleck’s great grandfather, he could use the Chaos Heart to wipe out all of existence. And we see in Dream Team that only he can open doorways between dimensions.

Because of this, some fans think Luigi is nearly all-powerful. Why so scared, then? He worries about ghosts because in the Mario canon they sometimes take people over and would unlock his full destructive potential.

Moreover, he hangs around Mario because Mario may be the only one who could stop him if he lost control.

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Luigi’s a Cold-Blooded Killer

One thing we’ve talked about before is the insanity of the original Super Mario Bros. manual. The manual claims the citizens of Mushroom Kingdom were turned into blocks.

That means Luigi (like Mario) is actually killing these citizens with every bashed block, and he’s willing to murder someone for nothing more than a spare coin.

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Luigi Was Hidden Within Super Mario 64

For many years, fans believed Luigi was hidden within Super Mario 64 as a playable character.

While he was not actually in the final game, recent leaks of Nintendo development files show that the company created his sprite for the game.

And you eventually could play as Luigi in the Nintendo DS version of the game.

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Why It’s the “Mario Brothers”

If one is Mario and one is Luigi, why are they called the Mario Brothers?

Some fans pointed out that in the Mushroom Kingdom, characters are usually named after an entire species (Yoshi represents all the Yoshis, Toad represents all the Toadstools, etc.).

If Mario introduced himself first (“Hi, I’m Mario, and this is my brother”), then the Kingdom might have just started calling them “the Mario Brothers” because of their weird rituals.

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Luigi Was Killed By the Grim Reaper

Sometimes Nintendo helps create fan theories through bonkers advertisements.

For example, one Smash Bros. promo showed Luigi getting killed by the Grim Reaper from Castlevania.

This added fuel to the “Luigi is actually dead” theory, and Nintendo eventually had to clarify that Luigi was OK.

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Luigi Is Playable in Super Mario Odyssey

Super Mario Odyssey is an amazing Mario game full of secrets. Countless fans believe that one of those secrets is a playable Luigi.

As with Super Mario 64, though, there is no way to play as everyone’s favorite green machine in this game.