(Ah screw it I'm going with option 3 for more exposition and so I can set the battle up better.)
"Well well well I was looking for some mice to test this Machine's capabilities and found 3 very interesting candidates. A somewhat competent Met, a cyborg that has many interesting upgrades that I want to examine from your body once you are...incapacitated, but most of all my very own Mother!" The shadowy figure said still hidden from view.
"What the hell!?" Flame shouted at what he just heard.
"No way it can't be, why are you here!?" Sakura cried in anguish.
"Ho Ho Ho, isn't it obvious Mother, this lab contains a gold mine of weapons that will be used to carry out my plan. RPM City has no meaning, the citizens are apathetic and only see what is in front of them, surely you have witnessed it as well and tire of it. This place has no hope of being productive after the disaster Mopcam has wrought, the only way that this can be remedied is if RPM City is thrown in a perpetual state of war! It'll be easy all I need is to manipulate those pesky human emotions to the point that they will turn against each other and abandon their hope and ideals and fill them with weapons.
With war the only state of life in RPM City, you and I will supply weapons to the inhabitants and in turn be worshiped as gods for providing their only way of defending themselves. Isn't that what you wanted Mother, the people will forget about the Legends stadium and the city will stop digging themselves a hole with their own hopelessness!" The figure declared.
"Why would I want that, I would never want my friends to hurt each other to distract them from the disappointment left by Mopcam!" Sakura yelled with tears in her eyes, utterly disgusted. "Come out already you damn bastard! There's no point of hiding your self from your creator, show yourself Dr. Light III!"
The figured emerged and had a resemblance to his namesake but in a even eviler way. The bot was dressed in a black lab coat with red trimming, gray pants, and black steel toed boots. On his head he wore a crown that was big enough to cover his hair and covering his eyes were dark tinted googles. However the most distinct feature was his crazy beard that was at the very least 5 times the size of the original Doctor Light.
"Okay, wait a minute, what is going on here? Who is this guy Sakura?" Flame asked confused.
"*sigh* It's a long story Flame, you see it all started when I made the Weapon's Shack Eastern Branch. I needed a person to man the shop since I can't be in 2 places at once. Remember when Borock bot said he was my second creation? This guy was my first, since the Eastern region is always snowing I thought, that a robot Dr.Light would be perfect to represent the place since he looked like Santa. I programmed him with a Jolly personality and the ability to make Christmas themed weaponry like the real Dr. Light. However I didn't want him to just look like a carbon copy of the late Doctor, I wanted him to look different so I decided to give him an even longer bad ass beard.
But it would take a lot of materials, materials I didn't have. So I decided to take the lazy way out, I hopped dimensions and stole a bad ass beard. There was only one person who had the perfect white, furry beard that was badass enough to fit my aesthetic: Smithy. Ever wondered why his final form lacked the beard, yeah that was me.
After I activated him, I taught him the basics and and left him to his own devices. However when I checked up on him at times he started becoming stranger and stranger, at first he delivered weapons like the real Santa Claus, I thought it was cute and thought nothing of it. Then he delivered weapons no one asked for, and a lot of them too. After that he began saying that he was better than Santa because he delivered practical things to the people instead of toys that people would forget about after a few month. He also said he wondered why Dr.Light wanted peace so much when it was nigh impossible to achieve.
I didn't think much of it, until one day when I updated the Wi-Fi security cameras and tested it out to make sure the update didn't screw up anything, I caught him saying a monologue similar to the one we heard just now. I was devastated, I wonder how he became like this and then it hit me like a ton of bricks. He was corrupted by Smithy's beard, I didn't see it until it was too late. So I stopped him the only way I could, I teleported there as fast as possible with a taser stunned him and finally deactivated him. Then I temporarily closed the Eastern Branch and left him in the basement until I could purge Smithy out of his systems." Sakura said with a sadness in here voice. "But enough about the past, how did you get here Dr. Light III?"
"Ho Ho Ho" Dr. Light III laughed "It's amazing how you underestimate me dear Mother, I am one of your creations after all, and I learned everything from you. I built my own subjects should you ever managed to deactivated me to re activate me so I can carry out my plans. As a matter of fact there they are."
The three of them looked back and saw his army it was a mix of Smithy's old robots with a Christmas theme.
"Now then any last words you want to your companions before I blast them in a way that a Snowman would melt?" Dr. Light III sneered as he pulled out a Candy Cane rifle.
"Of course." Sakura said as she faced Flame and Zet "Guys I'm sorry, I'm a idiot."
"Oh that is not true Mother if you were I wouldn't exist. Now step away from them I wouldn't want to hurt you." The bot said trying to take aim.
"I wasn't finished, I thought I taught you better manners." Sakura said bluntly as she faced the Maverick once again. "I should have destroyed you for what you were planning but I wanted to give you a chance to redeem yourself. I wanted to cure you because I felt ashamed of my self for thinking the beard of a madman wouldn't have an effect on you. Had a kept a better eye on you it wouldn't have come to this. And yet despite the fact that I'm facing my greatest failure, I still don't want destroy you. I'll ask you this only once, abandon this mad plan and come back to me so that I can help you!"
"Ho Ho Ho, Oh dearest Mother I appreciate your concern, but I am not broken. It fact I've never felt better, though I see we just can't agree. If I must destroy you to save RPM City, I will!" He said in a insane way as the army and Tank closed in.
"As I thought it was useless to ask, you're consumed by power." Sakura said with regret "However, you don't know my true strength do you? You don't know the strength of the humans who use their weapons right? It's not just the weapon that makes the warrior it is the Will! Without Will, humans might as well be mindless drones who did what ever they wanted. This Will manifests in the power known as FRESCA, and you want to know how my FRESCA came above. It come from my drive to never give up, to never yield to anyone no matter how strong. I am a wielder of the almighty power of immeasurable EGO!"
Sakura then unlocked her powers once again as her hair turned white and her eyes turned red.
"With this power I don't need a weapon to destroy you." She said as she tossed her backpack aside and struck her saber in the ground. "Flame take care of the army, Zet you got the tank, I'll take care of Light on my own. It's time to face my demons."
The two nodded and all three of them launched themselves into battle.