Although he hasn't had much screen time over the years, Darth Maul is a fan favorite in the Star Wars universe.The Sith Lord has inspired a host of fan theories, spanning topics from his origins to why he lost certain battles. While some of these Darth Maul theories sound like they could be true, others are a little more out there.
One of the biggest questions fans have been asking for years is whether or not Darth Maul survived Episode I. After all, the audience watches him get sliced in half. However, he shows up in other Star Wars films – he's a surprise Easter egg in Solo: A Star Wars Story – and other forms of canonical Star Wars media. Does this mean we will be seeing more Darth Maul soon? And how do these theories tie into his possible reintroduction to the franchise?
If it's true that Darth Maul is actually alive, as seen in Clone Wars and in Solo: A Star Wars Story, fans believe he will still meet his end in a battle. A good amount of evidence suggests it is Obi-Wan Kenobi who will do the deed.
In most media, Obi-Wan has been the one to defeat Maul. He does so in Clone Wars, Rebels, and Episode I, and with an Obi-Wan movie maybe in the works, Maul may fight his previous foe in some way. Fans believe the movie will depict a death scene, perhaps even the one from Rebels.
Many fans feel that either Qui-Gon Jinn lost too easily to Darth Maul or that Darth Maul lost too easily to Obi-Wan Kenobi. They say the battle indicates either Darth Maul lost intentionally (or was influenced), or that Qui-Gon lost on purpose, as per a fan theory from Redditor /u/MuscleT.
In Episodes IV, V, and VI there is an overarching theme that sacrificing yourself as a Jedi can make you and your side more powerful. The theory goes that Darth Maul was a weaker opponent, and normally he could never defeat Qui-Gon. Instead, the Jedi allowed himself to fall in honorable combat in order to gain more power. Maul was just a pawn in that game, and Obi-Wan beat him due to Qui-Gon's sacrifice.
This is less a theory about Darth Maul's history or future and more about the original intent for his character. Obi-Wan and Grievous have a bitter rivalry that doesn't seem to have a lot of history behind it (at least in the movies). To some fans, it seemed like Grievous was originally supposed to be someone else, and a theory from Redditor /u/Cameron-Ohara says that someone is Maul.
Given the backlash after Episode 1, fans believe George Lucas might have wanted Maul and most things from that movie to remain dead. Instead of bringing back Maul, he replaced him with a different character, Grievous. It would fit, seeing as Grievous has no real origin story.
Some think the reason Darth Maul was able to survive being sliced in half is because it wasn't his actual legs that were severed from his body. A fan theory from Redditor /u/joelschlosberg suggests Maul was mostly robotic in the first place, and that's why he didn't die. There are plenty of humanoid robots in the Star Wars universe, so it's not out of the realm of possibility. Maul is also always covered in heavy black robes, so there's no telling if he's really flesh and blood all the way through.
In the Clone Wars series, fans do see him with new robotic legs (after a creepy spider-leg phase). But were those from his defeat on Naboo, or were they replacement legs after his previous ones were sliced and diced?