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Maybe you are right. All his techniques. Yes, ninja style. Stay untouched, unseen or making minnions that are great in power and knowledge as he is.
Edit: Or maybe he choose to master ninja style because he is a looner like person or the one who does not wants to be seen. This might be just a nonsense but... What if he does not like being around people, feeling not comfortable. Let's brainstorm, he is using:
*Invisibility technique
technique (maybe smoke bomb effect actualy means that its just smoke bomb falls down from his sleeve and that invisibility is actualy effect of what cause falling smoke bomb. It might be made like that so It would look like smoke bomb works like for the real ninja (they use it to evade) so temp. invisability is actualy a not invisability and just one of the ingredients of performing evasive action.
*Clone technique
Technique that allows him to spawn two close who are same as he but just have less HP. This technique mostly not used to have more companions while fighting but again, to evade, confusing enemy into thinking that clone is actualy a you. In that way when two clones are fighting your fight, you can have a rest, come up with some strategy to defeat your enemy.
*Transform technique.
Good way to get some new powers while becoming another person. I think that you did noticed that I am going with defensive "mechanism" or "stay away from me strategy". Maybe Rudolf avoids fighting with his original look so he "steals another one to fight undercover. That would be good way to avoid contact with your enemy since has to fight another one, not Rudolf. Also, Rudolf must come in contact with his target so he could become the target itself.
*Rolling-Dash
When you press defence while running, Rudolf perform quick dash which is actualy a blur that eye only was able to catch but then again its in ninjas nature. But while dashing Rudolf avoids contact.
Most of the ninjas are using shurikens and knifes/kunai/short swords (mostyle two) or one smaller (kodachi for a assassination) but Rudolf carries two swords. By the looks of swords, it could be Katana or Wakizashi. Katana is most common japanese sword reffered by the people and its lenght seems to fit perfectly but then again in some sprites, sword gets Wakizashi shape and lenght. Its actualy hard to decide which one, or maybe both?. I don't remember if I watched a documentary or read about ninjas but there was some interesting facts. You could not become a ninja or just be one if you are tall, you had to be short, light (not heavy). They had to have a lot of energy but they were realy small because they had to go on a secrets missions for assassinations and more. Back to this case. In game we can see that Rudolf is almost same height as other characters. Maybe he is half ninja half samurai? His outfit does not seems to be like what would ninja be using. Ninjas have been said to have their faces hidden for some reasons. True, his shoulders seems to be lower than other fighters but he seems to be tall, his feets are big. Maybe he was rejected, not allowed to serve his purpose as a ninja because he did not matched weight and size category? But then again, we do not know what hides under his outfit, maybe he is realy skinny and not that tall at all. Maybe thats why he choose to become a looner and he became mercanary ninja/samurai? Maybe he joined Little Fighters because he got a mission ,from the one who paid, to kill Julian because the one with the mask killed, demolished someones village and Rudolf needed some help or just because they share same interest in it but he still keeps working alone than working by using teamwork?
But hey, it's just a theory.
Edit: Or maybe he choose to master ninja style because he is a looner like person or the one who does not wants to be seen. This might be just a nonsense but... What if he does not like being around people, feeling not comfortable. Let's brainstorm, he is using:
*Invisibility technique
technique (maybe smoke bomb effect actualy means that its just smoke bomb falls down from his sleeve and that invisibility is actualy effect of what cause falling smoke bomb. It might be made like that so It would look like smoke bomb works like for the real ninja (they use it to evade) so temp. invisability is actualy a not invisability and just one of the ingredients of performing evasive action.
*Clone technique
Technique that allows him to spawn two close who are same as he but just have less HP. This technique mostly not used to have more companions while fighting but again, to evade, confusing enemy into thinking that clone is actualy a you. In that way when two clones are fighting your fight, you can have a rest, come up with some strategy to defeat your enemy.
*Transform technique.
Good way to get some new powers while becoming another person. I think that you did noticed that I am going with defensive "mechanism" or "stay away from me strategy". Maybe Rudolf avoids fighting with his original look so he "steals another one to fight undercover. That would be good way to avoid contact with your enemy since has to fight another one, not Rudolf. Also, Rudolf must come in contact with his target so he could become the target itself.
*Rolling-Dash
When you press defence while running, Rudolf perform quick dash which is actualy a blur that eye only was able to catch but then again its in ninjas nature. But while dashing Rudolf avoids contact.
Most of the ninjas are using shurikens and knifes/kunai/short swords (mostyle two) or one smaller (kodachi for a assassination) but Rudolf carries two swords. By the looks of swords, it could be Katana or Wakizashi. Katana is most common japanese sword reffered by the people and its lenght seems to fit perfectly but then again in some sprites, sword gets Wakizashi shape and lenght. Its actualy hard to decide which one, or maybe both?. I don't remember if I watched a documentary or read about ninjas but there was some interesting facts. You could not become a ninja or just be one if you are tall, you had to be short, light (not heavy). They had to have a lot of energy but they were realy small because they had to go on a secrets missions for assassinations and more. Back to this case. In game we can see that Rudolf is almost same height as other characters. Maybe he is half ninja half samurai? His outfit does not seems to be like what would ninja be using. Ninjas have been said to have their faces hidden for some reasons. True, his shoulders seems to be lower than other fighters but he seems to be tall, his feets are big. Maybe he was rejected, not allowed to serve his purpose as a ninja because he did not matched weight and size category? But then again, we do not know what hides under his outfit, maybe he is realy skinny and not that tall at all. Maybe thats why he choose to become a looner and he became mercanary ninja/samurai? Maybe he joined Little Fighters because he got a mission ,from the one who paid, to kill Julian because the one with the mask killed, demolished someones village and Rudolf needed some help or just because they share same interest in it but he still keeps working alone than working by using teamwork?
But hey, it's just a theory.
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