-Before Whitebeard and Soren made their appearance on the Marine's side-
Ace was being shackled to the Execution platform by 2 marine Captains while Sengoku, Garp and Aokiji stood to the side to make sure Ace didn't try anything. After Ace was shackled down Sengoku started talking with Ace and asking him questions, but Ace just sat there with his head aimed towards the platform underneath him, Sengoku then took a Snail communicator and started speaking into it for everyone to hear.
[So… Fire Fist Ace… I would like you to tell everyone who your father is]: sengoku
Ace still sitting there spoke for the first time since he was shackled.
[My father is Whitebeard]: ace
[No he isn't, tell us who your father is]: sengoku
[Yes he is… I have never looked to anyone else as a father except for Whitebeard and my Teacher]: ace
[And who is this Teacher?]: sengoku
[You all know him… He goes by the name Blue Reaper… And when he finds out that you guys killed me he will come and take your pathetic lives, Hahaha!]: ace
[Well we will deal with that when the time comes, but for now we are talking about your father… Not your fake father or father figure, but your Real father… You see, back in the day we were looking for a newborn who would have been born around the time we were searching. We had asked many mothers who had just given birth or were days away from giving birth but to no avail… We searched but still found nothing… Ace do you know your mother's name? It was Portgas D. Rouge, she had fooled the Marine's… No, she fooled the entire world… Be it for the love of her child or the will to see to it that you survived, she had carried you inside her for 20 months, and as she gave birth ran out of strength and died… Your mother had at that time given birth to the child of the most evil pirate the world has ever seen… Your father is Gold Roger, the King of the Pirates]: sengoku
After Sengoku finished his speech the whole place was quiet, in fact, the whole world was quiet, but once the people processed what was said they started to clamor over it, they had no words for what to say about the situation. It was also this time that Soren had arrived on scene and stayed way in the back, Sengoku was just about to start the Execution when Garp tried to prolong the Execution for someone, hell anyone to save Ace.
[Sengoku, It's not yet time to start the Execution, we still have a couple minutes]: garp
[No… I will start the Execution now to prevent any unseen calculations that will mess up this chance at ridding the world of Roger's Blood]: sengoku
Sengoku was just about to signal for the Execution to start when in the process of signalling Sengoku heard something in the distance and stopped to see what was happening. In the distance Sengoku, Garp and many other Marine's could see a big Ship that was shaped like a whale coming towards them with the crew chanting "Save Ace" and behind them more ships from different crews were following in succession, Sengoku then saw Whitebeard stand up while removing the life support connectors, Whitebeard then used his left fist to smash the air causing fractures that in turn brought up a Tsunami. Aokiji saw this and seen that it was heading towards Marineford, he quickly turned the tsunami and the sea into ice, the tsunami froze in place and Whitebeard started to ready his signal to fight, but right before the signal was issued everyone heard a crack and felt a rumble as they looked towards the tsunami that was shaking and cracking with Black lightning running through it. The ice wall then shattered into pieces and started to crumble, and as the ice started to settle everyone saw a man floating through where the wall used to be.
[Who in the Hell is this brat?]: whitebeard
Sengoku had the same Idea, the man before them looked familiar but yet they haven't seen much of him, as Sengoku was pondering about this man and his identity a Marine Captain rushed up with a wanted poster.
[Sir… This man's name is Soren, he is suspected to be related or in fact is Blue Reaper]: marine captain
Sengoku took the picture and looked back at Soren who was still floating there, he also thought to himself about what his Devil Fruit could be, and because he didn't know he informed everyone to be cautious. He then looked over to Ace who had no care for life and was looking down towards the platform below him.
[Look who came Ace… Your father and your Teacher, how heartfelt that they have come to watch you die]: sengoku
Ace looked up to were Sengoku was pointing and saw both Soren and Whitebeard, Soren then started floating over to Whitebeard's ship and landed, as for Ace he started shouting.
[Dad! Teacher! Leave this place it was a trap to lure you all here!]: ace
[Teacher!!???!]: marine's/pirates/viewers
The whole world while watching were freaking out over Ace's claim, both Soren and Whitebeard looked at Ace then back at each other and spoke.
[Dad/Teacher?]: soren/whitebeard
Soren already knew that in the Anime Ace looked up to Whitebeard as a father but thought he might have changed it as Soren had raised Ace for 6 years. Whitebeard was intrigued as to the fact that the boy before him was the "Teacher" his son was talking about since Ace first joined the Whitebeard pirates. Soren and Whitebeard then came to terms on their individual thoughts then started to laugh at the same time, it was also at this moment that Whitebeard remembered who this was.
[Now I remember… You are that brat from Shanks' ship… How have you been brat]: whitebeard
Soren was still a bit mad that he continued to call him a "brat" but decided to toss the thought and just respond with his own pride.
[Nothing too hard… I have traveled here and there, trained almost everywhere and still will live a lot longer than your old ass, Haha!]: soren
Whitebeard didn't like Soren's comment and shouted.
[Then fight me Brat! I'll show you who's stronger in this fight]: whitebeard
Soren was tempted to take the offer but thought that they should do it later, because right now they had to save Ace.
[Maybe later old man… First we need to save Ace]: soren
Whitebeard then remembered what he came here for and shook his head in agreement, Soren then stepped forward amplifying his voice with Ki and spoke with a loud and deafening voice.
[My name is Soren… As you all heard, Ace is one of my Apprentice's]: soren
[J-just One of!?!]: everyone
Everyone was starting to talking and reminiscing about how hard it was to take Ace in let alone bring him to the Execution platform. Ace was a monster who deserves to be Gold Roger's child, and as everyone was discussing about Ace, Soren quieted them all down with his next words.
[So… Do you all plan to kill Ace? If so, do you plan to kill me to get to him?]: soren
As Soren said his words his clothes changed from the White T-shirt and Black pants he was wearing to a Blue shirt Black pants with a Black trench coat and White mask with Teal markings. So Soren could get his point across he released his strength as his eyes that were once purple evolved to the next level, his left eye had a Red Sharingan with his MS design while his right eye was Gold in color with the same MS design. Soren was surprised to see an evolution without the help of the System and felt happy about it, he then took out both his Zanpakuto and Kitetsu III holding one in each hand, Soren then covered them in his strongest Armament Haki making them pure Black in color, then surrounded them in his Devil Fruits wrapping them in a Black lightning. Everyone who saw this started getting scared about what would happen next, and as extra measures Soren released his King's Haki over the entire crowd, thousands of people fainted, once Whitebeard saw this he fell into though, he then quickly broke out of it and shouted towards all the pirates under his command.
[Charge! Follow Soren's lead!]: whitebeard
The pirates started charging in killing any Marine's who dare to stand in their way of saving Ace, soon Soren turned to see Luffy land on Whitebeard's ship.
[Who are you brat, and why are you on my ship?]: whitebeard
[My name's Luffy and I came here to save Ace]: luffy
[Guhahaha… Nice joke kid, but we got this… This ain't a playground, this is a War of the Best… Just go home kid!]: whitebeard
Whitebeard laughed off Luffy's comment about saving Ace and told him to leave, Luffy then started to yell at Whitebeard like in the Anime.
[Shut up Old man! I'm going to be king of the pirates one day!... And today I'm going to save my brother Ace!]: luffy
When Whitebeard heard Luffy's claims he was speechless, he had never meet someone ballsy enough to yell at him except for Soren. It was also at this moment Soren descended from the sky back onto Whitebeard's ship and spoke.
[Hey Luffy… Welcome to the party, wanna give me a hand?]: soren
Luffy turned to see Soren and quickly yelled.
[Teacher!... You must be here to help save Ace too!... Yeah, I can give you a hand, let's go save Ace]: luffy
'I should have expected for Soren to teach that boy as well… *Haaaa* I'm getting too old for this': whitebeard
Whitebeard thought as he watched the interaction between Soren and Luffy, he felt that today he would see a new generation being born into the world "The Worst Generation". Luffy then asked Soren a question.
[Teacher… What happened to your swords? They look like the same ones but the blades are Black in color]: luffy
[*Sigh* You will find out later, but for now let's go save Ace… Oh and one more thing]: soren
Soren then took out a Senzu Bean and handed it to Whitebeard and told him to eat it.
[What's this little bean going to do?]: whitebeard
[Just eat it quickly before something bad happens]: soren
Whitebeard popped the bean into his mouth and ate the Senzu Bean, after a couple of seconds Whitebeard was feeling like he wasn't sick anymore.
[This is great!... But kid… I still won't be able to do much like this, I'm reaching that age I won't las-]: whitebeard
Soren then put his arm up facing Whitebeard and focused all of his Ki and transformed it into Life Force and sent it into Whitebeard. After Whitebeard felt the surge of energy revitalise every single one of his cells he felt young again.
[That should make you live another 60 years… Enjoy, this is my gift to you]: soren
Soren then took another Senzu Bean out and ate it to replenish all of his lost Ki and turned back to Luffy.
[Let's go get Ace!]: soren