In the Star Wars universe—whether we’re talking Legends or Canon—we’ve seen just how terrifying it can be when a Jedi falls to the dark side. From Revan and Exar Kun in the Old Republic era to Count Dooku and Anakin Skywalker in the films, some of the galaxy’s most dangerous threats were once protectors of peace.
And that makes sense. Jedi already have incredible power, discipline, and connection to the Force. But when that power is twisted by fear, anger, or betrayal? That’s when things get scary.
So it got me thinking—what if some of the most powerful Jedi never fell… but did? Which ones would’ve been the most dangerous Sith Lords or dark side users the galaxy has ever seen?
Here are 6 Jedi who would’ve been absolutely devastating if they turned to the dark side.
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#1. Yoda
Let’s be real—if Yoda ever turned to the dark side, the entire galaxy would be in serious trouble.
We already know how powerful he is in the light. As Grandmaster of the Jedi Order, Yoda spent centuries mastering every aspect of the Force. He wasn’t just wise—he was an absolute powerhouse in combat, and no one matched his connection to the Force. We’ve seen him toss around Senate pods, absorb lightning from Darth Sidious, and move with speed that defies his age.
Now imagine all that power, all that wisdom… corrupted.
There’s even a moment in The Clone Wars series where Yoda enters the tomb of Darth Bane on Moraband. He’s tested by visions and the pull of the dark side. If he had given in—even slightly—that could’ve been the moment everything changed. Imagine a twisted alternate reality where Sidious didn’t have to find a new apprentice… because Yoda joined him. A dark duo of Darth Sidious and Darth Yoda? That’s pure nightmare fuel.
If Yoda ever embraced the dark side, his tactical mind and centuries of knowledge would make him nearly unstoppable. He wouldn’t just be a brute-force Sith Lord—he’d be a calculated, manipulative master of the dark arts. Every move would be deliberate. Every strike, devastating.
And honestly, there’s something terrifying about the idea of someone who fully understands the light—and still chooses darkness.
#2. Luke Skywalker
Luke turning to the dark side isn’t just a scary idea—it’s something Star Wars has flirted with more than once.
We’ve seen the signs. In Return of the Jedi, Luke walks into Jabba’s palace dressed in black, Force-choking Gamorrean guards without flinching. And when he finally faces Darth Vader, he nearly gives in. That final duel? It wasn’t clean. It was raw, fueled by anger, especially when Vader threatens Leia. You could feel the dark side pulling at him—and for a moment, he let it in.
It’s not hard to picture the version of Luke who didn’t stop himself. The one who struck Vader down and took his father’s place beside the Emperor. That Luke wouldn’t be a servant like Vader—he’d be something far more dangerous: a fully aware, self-controlled dark side wielder with Anakin’s power and none of his emotional instability.
Even in Legends, we saw just how close this version of Luke could come to reality. In Dark Empire, he falls, willingly joins the reborn Emperor, and only barely claws his way back. And in canon, his moment of doubt with Ben Solo shows that darkness was never far behind him.
If Luke had chosen that path—fully, deliberately—he would’ve reshaped the galaxy in ways Palpatine could only dream of.
#3. Mace Windu
If there’s any Jedi who already walked the edge of the dark side without falling, it’s Mace Windu.
Windu was a warrior through and through—disciplined, powerful, and relentless. He mastered Form VII, known as Vaapad, which literally channels dark side energy through controlled aggression. Most Jedi avoided it entirely because it brought them too close to the dark—but Windu wielded it with precision. That alone tells us how dangerous he would be if he ever fully gave in.
We’ve already seen glimpses of how close he can get. In Revenge of the Sith, when he corners Palpatine and declares, “He’s too dangerous to be left alive,” you can feel the tension. Windu isn’t driven by mercy—he’s ready to end Sidious right then and there. If Anakin hadn’t intervened, he might’ve done it too.
And it’s even more chilling when you think about what happened just before that. Anakin had done the same thing to Count Dooku—executed him at Palpatine’s command. The difference? Anakin gave in to the dark side, acted out of fear and anger… and it marked the beginning of his fall.
Windu, on the other hand, stood at that same crossroads. He was about to strike down Sidious not out of rage, but because he genuinely believed it was the only way to save the Republic. But the line between justice and vengeance was razor-thin—and he was dangerously close to crossing it.
If he had fallen, if that moment broke his restraint, Mace Windu could’ve become a Sith unlike any other. Not ruled by chaos like Maul, not twisted by fear like Anakin—but shaped by purpose, control, and sheer dominance. A dark side Mace Windu would’ve been the galaxy’s ultimate enforcer.
#4. Obi-Wan Kenobi
Out of all the Jedi, Obi-Wan is probably the last person you’d expect to fall. He’s the embodiment of restraint, balance, and loyalty to the Jedi Code. He resisted hate when Maul killed Qui-Gon. He stayed calm during the Clone Wars. He even walked away from Anakin—the brother he loved—without giving in to anger.
But that’s what makes the idea of a dark side Obi-Wan so chilling.
He knows pain. He’s lost everything—his master, his troops, his friends, and the Republic he fought to protect. If that grief ever twisted into resentment, it wouldn’t take much to push him over the edge.
And unlike Anakin, Obi-Wan wouldn’t be impulsive or reckless. He’d be calm. Calculated. Precise. He’s a master of Form III Soresu, the ultimate defensive style, but imagine if he flipped that discipline into pure offense. With his strategic mind, knowledge of Jedi and Sith tactics, and deep understanding of the Force, Obi-Wan wouldn’t just fall to the dark side—he’d dominate it.
He could outthink Sidious, outduel Maul, and outmaneuver the Jedi from within. And the scariest part? He’d probably believe he was doing the right thing the entire time.
#5. Plo Koon
Plo Koon might not be as flashy as Yoda or Mace Windu, but make no mistake—he was one of the most respected and powerful Jedi Masters of his era. He discovered Ahsoka Tano, held a permanent seat on the Jedi Council, and was one of the few Jedi known to use forbidden abilities like Electric Judgment—a light-side version of Force lightning. That alone proves how close he walked to the edge.
But here’s the wild thought—he already had the tools that most Sith crave.
Plo was calm, composed, and fiercely loyal. But what if that loyalty fractured after years of war, betrayal, and watching the Republic fall into darkness? A dark side Plo Koon wouldn’t be loud or vengeful—he’d be cold, quiet, and devastatingly precise.
His knowledge of Force abilities and strong moral compass would make his fall especially tragic. He’d still believe he was doing the right thing—bringing peace through absolute control. But under that mask, he’d be something terrifying: a Jedi-turned-enforcer, using every tool the Sith feared he might one day master.
If he embraced the dark fully, you wouldn’t even see him coming. One wrong move, and he’s already behind you.
#6. Ahsoka Tano
If we’re talking Jedi who almost had a path to the dark side, Ahsoka Tano deserves to be in this conversation. She wasn’t just any Jedi—she was Anakin Skywalker’s Padawan, his closest student, and in many ways, his emotional anchor before his fall.
Obi-Wan and Anakin may be the most iconic Jedi duo—but Anakin and Ahsoka were the most personal. Their bond ran deeper than duty. That’s what makes the idea of a dark side Ahsoka so chilling.
When she walked away from the Jedi Order, she lost faith in everything she was taught. That kind of disillusionment is exactly what the dark side preys on. And if Anakin had known she survived the Clone Wars, there’s no question—he would’ve reached out to her long before he ever tried to sway Luke.
And we’ve already seen a glimpse of what that might look like.
In the Mortis arc from The Clone Wars, Ahsoka is corrupted by the dark side under the influence of the Son, one of the powerful Force-wielders representing imbalance. In that brief moment, we saw how terrifying she could be when twisted by darkness—vicious, unhinged, and full of hate.
Even though she was eventually freed from the Son’s control, that scene proved one thing: Ahsoka had the potential to become something truly dangerous if pushed down the wrong path. The power, the skill, the connection to Anakin—it was all there. All it would’ve taken was the right moment… or the wrong heartbreak.