These are exploits created by members of the group ''The Red Scorpion Company'' [CLICK] If you wish to join the group, VM or PM me and I will add you to the group. Anyways, now to move to the exploits:
Sasori's Ability to Expand Satetsu | Exploit #1:
Sasori = Gaara in a desert
Over my time on the Versus section, I have seen that people tend to underestimate Sasori because they imply that he has a small amount of Satetsu. That's also the main reason why he is underestimate in Sasori vs. Gaara threads. What I would like to say is that Sasori can expand his amount of Satetsu whenever he wants and make himself basically an advanced Gaara in the desert. To explain how I came to this conclusion, first off let's look at the amount of Satetsu that came out of the Sandaime Kazekage's mouths.
When we look at the amount of Satetsu, we can come to a conclusion that the amount of Satetsu present there isn't even bigger than the Sandaime Kazekage Puppet. Looking at an another manga page, we can see that it was barely as big as Sasori himself. [x] That shouldn't be very impressive since Sasori isn't really tall. Just look at what wiki says on how tall he is.
Height: 164.1 cm
Even people like Naruto are taller than him. Since the Satetsu that came out of the Kazekage's isn't really any bigger than him, it means that it shouldn't have been able to create some huge Satetsu stuff. The biggest Satetsu attack that amount of Satetsu could have created is Satetsu Shigure. [x] And yet, when we look at Sasori's next attack.
The Satetsu Triangle, Rectangle and Wings now all happen to be bigger than the Sandaime Kazekage Puppet itself while previously when the Satetsu came out of the Kazekage's mouths, the Satetsu wasn't even as big as the puppet and it barely was as big as Sasori himself. This means that Sasori indeed did expand the amount of his Satetsu via Magnetic Fields of the Sandaime Kazekage Puppet. And that's not all. What happened when Sasori decided to end the battle, he used Satetsu Kaihou which was basically able to cover the whole cave except some parts. [x][x] You can conclude that by seeing what Sakura said. ''It's going everywhere!''. And back when we look at the Satetsu Wings, Triangle and Rectangle, we can see that those Satetsu shapes were barely as big as a small part of the cave [x] so what happened here extacly. How did Sasori get an amount of Satetsu that could cover almost the whole cave? Simple. He expanded the amount of Satetsu again.
And of course, I'm not done. Furthermore, to completely back up my claims, let's look at the Satetsu that came out of the Sandaime Kazekage's mouths again. [x] And then let's look at what happened once the Sandaime Kazekage was destroyed. All of the Satetsu that was used for Satetsu Kaihou started turning into normal Iron Sand again. [x] Where did all of this Iron Sand come from when Sasori didn't have this much when it first came out which means that it should be fairly obvious that Sasori generates and expands more Satetsu via the Sandaime's Magnetic Field.
A wave of Satetsu falling down and when we compare it to the amount of Satetsu that came out of the Sandaime's mouths, you'll see that there is a lot more Satetsu now since that whole wave could basically envelope Sakura. And furthermore, when we look at the Satetsu once it has fallen down on the ground and compare it to Chiyo and Sakura, we could basically see a lake of Satetsu in which they could even take a bathe in.
Conclusion and clearing up some misconceptions:
Sasori is basically a Gaara in a desert with all of this explained, just with faster, harder and poisonous sand. He could create attacks like Sand Tsunami [x] or call it Satetsu Tsunami if you wish, and etc. Some may say that it takes time for Sasori to do things like these and that the Satetsu won't contain poison after he does this, but this isn't true. Sasori can make Satetsu faster whenever he wants [x] so it doesn't take that much time and it will still contain poison as seen when Sasori expanded the amount of his Satetsu and then poisoned Sakura with that Satetsu. [x]
That's all what I wanted to share with you.
Sasori's Immunity to Genjutsu | Exploit #2:
Immunity to Genjutsu
In all honesty, I fail to see how this is still being debated, but I've seen people claim that Sasori is not immune to Genjutsu despite the fact that he is a Human Puppet. [x][x] From Jiraiya's explanation [x] we know that the Genjutsu works by targeting the opponent's head and messes up their senses. It basically causes you to hear, sense, see and maybe even taste what the caster of the Genjutsu wishes you to. However, sadly for Genjutsu users, Sasori is a Puppet who lacks a brain and only has a heart as stated by the man himself.
Let me explain a bit more. In Naruto, thoughts and those stuff seem to be part of your "Mental Energy". If you read the Databook article for Mind Body Transfer, you would see that Yamanaka force all of their Mental Energy into the other person, thus their body drops unconcious. If you realise, Ino can now think in the other persons body? Sasori can still think, because he HAS a piece of flesh, which contains both Physical Energy + Mental Energy. Both needed to create Chakra. In your entire body there is Physical Energy and Spiritual/Mental energy, and when you merge the both, you make Chakra. [x] Yamanaka force their entire Mental Energy into other people which inturn sends their Mind as well, then their body just falls, in the other body, they maintain their ability to think, their entire MIND has been passed over and that shows that the mental energy part of your body is where your mind is in Naruto.
With that said skin and all human organs have sense receptors so by having that little piece of human remains atleast one sense can be manipulated. However Genjutsu doesn't just affect senses. It affects Chakra in the cranial nerves to be EXACT. It is the cranial nerves in the brain that controls most the senses.
For eg the Olfactory controls your sense of smell. <-- A sense that sasori has no longer. A Genjutsu user controls those cranial nerves, and could make you do what he wished. If he wanted you to see Red clouds and a Red moon, He would target the Optic nerves in the interbrain to make you see Red clouds and a Red moon.
Kishi however didn't explain everything to well, and sasori has found a way to maintain
Those are just about the only almost unexplainable things, but it simply has to do with the fact that it's a fiction story. Where someone can make themselves into a puppet, and someone has blue skin and looks like a shark. We can't really make sense of any of it, but what is clear is how Genjtusu works. However, if people wish it could be explained how Sasori retained the ability to see and hear despite having only a heart.
Section two was written by a very intelligent member in which we don't have with us currently any longer; pay close attention to this part as I can conclude that it is the ideal changer.
To strengthen the possibility of Sasori being immune to Genjutsu I have to bring out a few scenario's similar to the premise:
When Orochimaru absorbed his Chakra from Kabuto, he obtained memories and information from him.
When Itachi prodded Sasuke he forced information - Amaterasu - into Sasuke, the fact he had Itachi's MS style shows his influence.
Just confirms that in the NV that Chakra can contain information, that a heart as the source of Chakra can be seen as Sasori's 'brain'
In reality, it shouldn't even be debatable since Sasori himself already stated that he only has a heart and no brain, and not to mention that the Databook itself stated that Sasori can no longer be conisdered Human. [x]
A special thanks to Kaaant and Owarij for some of these points.