This is what I think (from the locked thread) regarding this:
3. Goku fought against Freezer using KKx10 SINCE THE BEGINNING OF THE MATCH. This could be another discussion thread by itself, but I will try to settle this in this first post.
Firstly, we know about the KK being in use through Kaito and not because Goku or anyone else notices its sudden activation. A KK x10 is a HUGE increase that should at least have an effect in-battle, and we see none of that. Of course, and since KK x10 has not an aura drawn like the other KK, there could be some confusion about this, but there are only two spots where KKx10 could be activated if it had an aura and if it was activated in the middle of the fight:
1st: Chapter 311 page 6

Why it's impossible for the KKx10 to be activated at this point?
Simply because Freezer hasn't powered up a bit compared to when the fight started, and it's precisely at this point where he starts to fight without hands.
To put it in other words: How is it possible that Goku and Freezer fought evenly until that point, Goku suddenly multiplies his strength by 10, and Freezer is still able not only to defend himself as he had planed before Goku's power up but even do it without using his hands?
It simply isn't possible unless we assume a huge mistake from the author's part, which can only be assumed when another explanation is simply not possible. This is not the case as it's obvious from the fact that I'm already giving an alternative explanation to this.
2nd: Chapter 312 page 10

Why it's impossible for the KKx10 to be activated at this point?
Similarly to the other case, but for the opposite reason. At this point Freezer had already powered up, and his hits were enough to totally out-match Goku's KKx10. By that point, Goku had also received some attacks from Freezer, and Freezer didn't know anything about any KK. Considering this, Freezer's hits were directed towards the same enemy (from Freezer's perception) and to have the effect we see on the manga, and considering the 10% rule which has been demonstrated with numbers, Goku would have died at the first hit with a difference that big in power.
So, this time, it's the fact that Goku can survive through Chapter 312 pages 6 to 9 that completely invalidates the possibility of KKx10 being activated at page 10.
That and the fact that the KK aura has always whitewashed eyes for Goku, and this is not the case for this concrete page.
Now, there were some points made against this theory:
The last reply regarding this topic is that one made by Darkprince410 which of course I'm going to reply:freezamite wrote:I read that, and it was as you say locked before I could answer to it.Darkprince410 wrote:The topic was locked before you had a chance to comment on it, but Piccolo does comment about Goku's strength increasing after Freeza started using 50% of his full power but before Goku attempted the 20x Kaiou-ken.
Chapter: 312 (DBZ 118), P13.2
Context: as Freeza beats up on Goku
Piccolo: “Th-this is bad…There’s too much of a gap between the power they were hiding…”
Now obviously Piccolo isn't aware of Freeza only being at half strength or Goku still having the 20x Kaiou-ken in reserve, but this statement indicates that both of them powered up a good deal from earlier when they were "warming up". If Goku was using the 10x Kaiou-ken from the get go as you believe, then why would Piccolo indicate that Goku's power has risen?
Firstly, and considering how much of an impact a 10% increase in energy makes, I don't think that his "hidden energy" was the KKx10, but rather that he was fighting with KKx10 but without using all his energy. Freezer could perfectly be at 2.500.000 and goku fighting with 250.000 times 10 instead of 300.000 times 10.
But again, I don't think a 10x increase in the circumstances is supposedly done, it's coherent with what happens for the reasons I give. The points where those power ups could happen (an aura resembling the one of the KK appears) have really big problems of coherence to me with the action that takes place.
Well, that's not exactly true. When Goku uses the KaiohKen against Ginew, it uses it while releasing his suppressed power. Of course, he does it this way because he want's to impress Ginew, but when KK is activated it starts at 90.000 (which means that Goku was at 45.000) and SLOWLY (I think we can agree that KK's effect is instantaneous, so in order for the energy to rise that slow it had to be Goku the one manipulating it's energy while using KK) increasing it until it reached the point of 180.000Darkprince410 wrote:That doesn't work, since everything we've seen before indicates that Kaiou-ken goes off the maximum battle power of the user, and not any suppressed strength they've got.
That's a proof that something like this not only could be possible, but in fact was clearly done before the match against Freezer. This scene can be found at chapters 284-285 of the manga.
I'm perfectly conscious that Goku has some great resistance to hits and that Freezer wasn't trying to kill him, but I think that there is still a problem: Freezer didn't know anything about the KK.Darkprince410 wrote:As for you having problems with the instances where Goku would be using 10x Kaiou-ken with the aura (though I personally don't find them to be problems at all), remember that Freeza wasn't wanting to kill him, that he could gauge just by how he was moving and the blows he was trying to throw just how much weaker he was getting (and obviously would be able to compensate) and that Goku has been shown time and again to be able to continue fighting even after his body has been bruised, battered, and practically destroyed in the past, thanks to his incredible reserves of stamina. Him being able to take a hit when not in Kaiou-ken 10x with Freeza at 50% full power wouldn't be out of character, given both Freeza not wanting to quickly kill him and Goku's ability to take hits.
You say that this could be compensated by the fact that Freezer was "gauging" the situation by how he was moving, in which case this invalidates the use of KK at chapter 311 because at that point both Freezer and Goku were more or less equal in terms of ki used, and a sudden increase like this would've been impossible to counter by Freezer because:
1. Everything related to the physical abilities of a character (strength, defence, reaction speed, speed, etc. ) scales proportionally with the amount of Ki used.
That means that if Freezer is fighting at 500.000 he is as strong as someone with a power of 500.000, and he will react to things exactly like someone with that power would do.
A sudden increase to KKx10 while Freezer was still not powered up would've been deadly.
2. Even if Freezer could react to the sudden KK activation, he wouldn't be able to rise his power fast enough to fight. Freezer is not very good at controlling it's energy, in fact, he even has to transform in order to control it perfectly. He also needed a lot of time (compared to what's normal) to rise to that 50% figure, and even more to reach his 100% of strength.
That lets us with the scene at chapter 312 being the only possible option. Since Freezer powers up first, it could be possible for him to react to Goku, but there are three things that bother me regarding that:
1. Goku attacks Freezer from behind. It's true that Freezer was expecting him, but he was expecting him with 10 times less strength if KKx10 was activated then. We know that Freezer relies almost completely on what he can see and this is how Goku tricks him with the energy attacks, or even how Piccolo could approach him from behind and connect that kick to his head even when he was much weaker than KKx10 Goku and Freezer was also at 50%.
I'm not saying that this is a definite reason or anything, but it would be a bit out of character that someone that has always been unable to react to sudden changes or to surprise attacks now can not only react to them but also to adjust the strength of his hits in such a delicate and precise manner.
2. When Cell kills Piccolo-Kami, he kills him almost without wanting to do so. Cell was much, much better than Freezer at controlling his strength, but even then he broke Piccolo's neck like it was nothing, and the difference was MUCH, MUCH lower than 10x.
3. Even if it's Goku, and even when he has a good resistance to hits, we see him losing consciousness to attacks that should in theory be much weaker proportionally. I mean, a 10x difference in power is 100 times the difference there was between Vegeta and Dodoria or between Gohan and Raditz.
I know that Freezer was being delicate trying not to kill him, but one thing is being delicate and another one being so soft as to not kill even a fly. I mean, what was the difference between Freezer and Vegeta, it wasn't even close to this 10x and Vegeta is even more resistant to hits than Goku, and it ended how it ended.
Those 3 points, coupled by the fact that the KK can be used while suppressing one's own ki, makes me think that this was what really happened in that fight.
That and the fact that we know thanks to Cell and the people he absorbed the range of energy units that the z-fighters had during the android saga.