I could tell you all about Gun Dancers... but an essay or a history lesson can be drab and boring.  Instead, enjoy a quick dialogue.

Edit:  I should add that the two Canons Legends and Official conflict over the matters of Mandalore, particularly during the clone wars and the coup of Mandalore.

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"I don't understand," Sahren complained, "You said I wasn't a Jedi?"

The cyborg rose from his seat with a whining of gears and serves and considered his response.  He was older, more machine now than man, head half balding and the remaining tresses pulled back into a loose ponytail.  His right leg, right arm, much of his torso, one eye and even a piece of his jaw had been replaced by metal components.  The camera whirred as the man considered his answer. 

"That much is true," the cyborg replied, "You are not a Jedi."

"But this person I met, this woman," she complained, "She could 'sense' me or some poodoo like that from across the room."

Sahren was a small woman, with curled chestnut hair and a leather jacket spread across her small frame over a plain grey t-shirt with orange flaring.  She sat almost like an animal in a crouch, as if about to spring into action but whether to fight or to flee one could not be certain.

"She must have been a Jedi," the cyborg answered, "Don't see many of them these days since they tried to conquer the Republic and got their arses handed to them.  I never figured you'd run into one in this big wide galaxy.  I guess it is true.  Force draws the Force.  Met me a Jensaarai at one point that said that."

"So... what am I Mallarch?  These things you taught me, where did they come from?  You said it was something that anybody could do."

The pirate captain inclined his head, staring up at the ceiling for a moment, considering how best to respond.  That was never an easy question.  "Who am I?" was a question everyone asked themselves throughout their lives.  Sahren was seeking answers and it was a subject that pained Captain Mallarch, scourge of the space lanes.  He had hoped to pass away, without having revealed any of this to Sahren.  The fool girl could get things into her head.

"As you well know," the Captain explained, "there has always been friction between Mandalorians and the Jedi and during the Clone Wars the Mandalorian people chose to embrace freedom.  They separated from the Republic but did not join the Separatists..."

"but they did join the-"

"Don't interrupt.  They eventually would but not yet.  That is another tale.  This was a golden age for Mangalore.  The Mandalorian Protectors, the True Mandalorians who embraced the Codex were growing in power and the Jedi during the clone wars overstepped their authority and gave up their role as peacemakers and took to war.  This was unacceptable to the Duchess Satine, as was the baby stealing they had been forced to endure as a member of the Republic.  She believed this was why so few from Mangalore could touch the force for the Jedi had bred the ability out of her people.  The Duchess commissioned its own order of force users to complement the protectors and began scouring the galaxy for any and all knowledge of the force.

"I was one of those first few.  I traveled from system to system learning from those the Jedi looked down upon as did others.  I was assigned a True Mandalorian Knight Protector who would give his life in my defense and each of us came back and tought the others until our own means of using the force came into being, our own style if you would.  The first thing we learned was that heavy armour and the force did not mix.  It blunted the senses, made it harder to reach out with the force and the greatest weapon of the Jedi is not their ability to toss things around but the simple ability to know when danger looms or that a nearby room is filled with enemies or that the third corridor from the left leads towards your destiny.  

"This was at odds with our lifestyles.  Mandalorians were not Jedi, they wore armour, not flimsy robes.  We wore little in the way of armour but did not look like Jedi.  We were at first mere gun slingers, then we became gun dancers.  We could feel an enemy coming, shoot down men blind folded, and finally shoot blaster bolts out of the air with our own blasters like shooting skeet.  We learned to curve our blaster bolts and bounce our bolts off of hard objects.  We continued to pair our force users, now Gun Dancers, with our heavily armed Knight Protectors, perfectly complementing one another.

"We weren't as powerful as the Jedi, we were fewer in number, but we were an order and we were our own.  Then came the battle of Novus III.  We had been sent to rescue Senator Padme Amidala who was in danger of being taken by the Separatists when the Jedi arrived somehow believing we were responsible and wiped us out.  What you see of me today is the result.  I was one of the few survivors.  A gun dancer is no match for a Jedi, only with a Protector do you stand a chance as a pair.

"Worse, what we didn't know was that Darth Maul and Savage Oppress was using the Jedi distraction to conquer Mandalore and turn it over to the Separatist cause.  The Jedi, in essence, created their own worst enemy and I spent the next few months in a bacta tank being fitted for my new limbs."

"I don't understand, why did the Jedi do that?" Sahren asked, "How did they know?"

"I'm sorry my dear," Mallarch answered her, "I don't know.  Nobody does.  Only the Jedi did and they are all as dead as we were.  There were rumours that the dark side of the force clouded their minds, their ability to foresee.  I've even heard a foolish rumour that our new emperor is the pawn of a Sith lord and that he orchestrated the whole thing at his master's behest to eliminate our order as a possible rival to his power.  Honestly Sahren.  We may never know."
 
Sahren looked confused.  There was a lot to take in.  She was the last of an entire order.  True, it was a short lived order but what did that mean?  Was she obligated to rebuild?  Did she want that responsibility?  She had to admit the idea terrified her.

"So what do I do now?"

"I don't know Sahren.  I was never going to tell you any of this.  I was going to let the Gun Dancers die with me but when I met you, half Mandalorian, eager to see the galaxy and with that spark in you I started training you.  I kept saying I would stop, that you knew more than enough to be a competent smuggler or captain in your own right but I kept teaching.

"Whatever you do Sahren, so long as you are happy."

This, however, did not comfort Sahren at all.