Unexpectedly or is it to be expected? Instead of cooperation Baby just started laughing maniacally.
"Alright, enough with playing around! Since you fused together with Goku I will deem you the same monkey thrash he was. I will eliminate all of you damn Saiyans."
Dark breathed in and sighed loudly. "That your answer? Then I will have to use force now." It seemed Dark still gave Baby somewhat of a chance to redeem itself. It was very likely the Goku talking out of him.
But that little bit of good will vanished with his sentence. He narrowed his eyes and his expression became serious. "Prepare yourself."
"I don't need any preparation! Do you really believe you will have a chance against me? You are just a combination of weak individuals that can't even hold a candle against me. Just a moment ago you barely managed to hurt me. And not even that. You also forced your body to strengthen itself before executing the fusion and Goku´s real body is still that of a child's. I will show you exactly what an adult body can do with the SSJ4. No... WHAT I can do with this body. I will push it to the limits until it will break! And then I will destroy you!!"
Baby his ghostly green energy erupted without any hindrance. Dark could even see how some parasitic bulges appeared on Baby his back and slowly formed some sort of dark bluish pipes. It seemed like Baby powered up to the max now and was not giving a care for the bodies well being.
Dark watched all that in silence and with a calm attitude. But the more he saw the energy increasing the more it made him frown. He was no that wrong about Goku and Darc their fusion. They also had to end this in a fast manner. So why was he still standing and waiting for Baby?
After wasting enough time watching he deemed it was enough. Dark charged against the erupting Baby and tried to punch him but before the punch landed Baby stopped his outburst and intercepted the punch.
*Bam*
Both fists stood still and ripples started traveling around the space into infinity. It was a sign of the universe getting damaged and losing integrity. Its fundamental stability was at risk.
Dark´s eyes showed a little bit of surprise. He immediately gritted his teeth seeing that outcome. Or was that more of a grin? Did Baby power up that much to rival a gods prowess? He was probably around somewhere of Jiren level with his pure increase in power.
Baby grinned and his now completely engulfed red Tuffle eyes shined with a sinister light. "What's wrong? Not so confident anymore? But I must say this power is unbelievable. The planet won't last long for that matter. Can you risk to endanger the others?"
Ending his sentence he started to put Dark into a dogfight which he engaged back. But Dark´s movements were so smooth that he avoided most of the strikes that didn't need him to act with his body.
"Your energy may have risen, but your understanding of your power is still a far fetch from being a threat. If you are so concerned about the planet then up we GO!", said Dark while following each attack Baby made with his eyes. Then he teleported behind him and kicked Baby upwards. He didn't stop there and pushed Baby with his own flurry of attacks up into the stratosphere.
Blocking the last attack from Dark that he executed Baby gritted his teeth. "Was this really so wise. I commend your effort to put your ape friends out of danger but you should know I can still breath in space. You, on the other hand, I don't think so."
Dark only smiled at him and waited in silence.
That actually triggered Baby somewhat. "You dare still mock me after this? Fine!" His green aura flared out once more and he engaged Dark with some blasts.
Dark made a pistol sign with his hand and shot the blast away with his own shots. When he was finished and the last blast was neutralized he saw how Baby aimed a bigger blast unto the planet below.
He shot it and Dark moved very fast to intercept the blast. He used his leg and send the blast back at Baby. Baby just avoided it and engaged into close quarter again. Surprisingly this time all of his punched connected and hit Dark pretty hard.
"Hahaha! DIE!" Just when Baby said that his fists were caught by Dark and Baby felt some sort of energy infiltrating his body. "What!? I can't move?"
"Godly Bind...", was the only thing Dark mumbled shortly before he sighed. "What a major disappointment. After letting you power up and feeling that initiate clash of our fist, it made me so excited that I really wanted you to push even more. But it looks like you can't even handle 50% of my power before completely being overwhelmed. Lets cut to the chase since I don't have much interest in you anymore. I can waste my time somewhere else."
Dark let go of his fists and Baby still tried to struggle free. But it was all in vain. He only could keep quiet and watch what Dark did at the moment.
Dark was actually floating in a lotus position and having a hand on his chin. His other hand was supporting it. He seemed in thought.
But that didn't last long and he snapped his finger. "Got it!" Then Dark pointed his palm down to the planet and sucked some air with his telekinesis and mixed some energy into it. The air on his palm started to build a little pressurized globe with halos of air and energy in it.
Then after not even 10 seconds, he was finished and positioned himself back in front of Baby. He made a hand gesture with using some godly ki and Baby slowly was forced into an anatomic position with his limbs spread out.
"Grrr, damn you!!"
Dark stayed silent and aimed that orb he created at him. He seemed to search for a good impact zone. Then pulling it behind himself as if he made a one-handed Kamehameha even more godly ki started collecting inside the orb. Then when the sparkles stopped gathering he pushed the orb straight at Baby.
The energy entered Baby his body as if a stone entering the water.
"GAAAAAAH!" Baby started to cry out and small particles started pouring out of his back. It didn't take long and Baby´s true form was forcibly ejected out of Vegeta´s body.
Dark smoothly sidestepped the body in front of him that was Vegeta and did a godly bind to Baby once more. This time Baby could not even remotely do anything against it. Not even the slightest struggle.
Vegeta slowly started to descend to the planet down below in an unconscious state. Dark only looked after him and then concentrated back on Baby.
This guy had to vanish and even though one could slightly see a conflicting light inside Dark´s eyes he still was going to erase him. Goku was no saint in this timeline and Darc never was one, to begin with.
But Goku his personality still was that of the good guy that wanted to fight and give others a chance. Whoever he beats once he thinks he can beat again just as easy. Never thinking about the consequences.
But with Darc, this was not an option. So Dark put both his hands upwards and let a small Genkidama appear above himself. He let it float in front of his chest.
Then he grabbed it with both hands from each side and started to pressurize it into a smaller ball. While he did so, another energy slowly started to trickle inside it. It was violet colored energy. It mixed with the miniature Genkidama and let it become black.
But he was not finished. After that, he took it like a candy and put it inside his mouth, closed his eyes and let his energy flare up frantically for a short moment like a flame getting into contact with gasoline.
Dark opened his eyes shortly after and pulled a crimson red orb outside of his mouth. It was the black Genkidama that now had a crimson shine to it. He pointed it towards Baby.
"Be happy that you get to be the first one to be finished by this technique. I am actually curious about what will be the outcome. It is still experimental so I hope you die fast...", said Dark and pushed the energy with a flick towards Baby. "Kuiarasu Sekai Benigetsu. (World Devouring Crimson Moon)"
The energy became slightly bigger when it floated towards Baby. It devoured the godly ki that surrounded Baby and was binding him but before he could even escape, it was already entering his body. As soon as that happened he immediately stopped moving as if frozen. Then red lines appeared on him as if he was a shattered glass figurine. Not long after he just shattered and exploded into many red particles like a firework.
Dark only watched all that and wondered what really happened. But he only shook his head and descended downward where he caught Vegeta. He would deliver him safely back to the ground where the others were also still waiting.