As for the issue with Vampire Flash, it all comes down to Mary's problem in the end.
After capturing Mary, Batman gave her two choices.
Either she would leave Earth completely, taken away by Starfire, where she went, Batman did not care.
Or she would be locked up by Batman, but at the same time, she had to order Vampire Flash to stop all his aggressive actions.
Yes, as the progenitor of vampires, Mary could control all her descendants, including Vampire Flash. So by dealing with Mary, Batman essentially dealt with Vampire Flash.
This could be said to be the only direct method to deal with Vampire Flash.
Despite a bunch of Vampire Flashes running amok through the timelines, his bloodline connection with Mary was not so distant, and Mary was powerful enough to control him across the timelines just like she controlled Barbara.
Although she did not want to help Batman, Mary knew that her enmity with Starfire was greater, and the consequences of being taken away by Starfire were unimaginable.
Mainly because Starfire had truly believed in Mary, having no peers as friends for a long time. The joyful moments shared with Mary in the beginning had made her happy, otherwise, she wouldn't have fallen into the trap so easily.
Hate born from love turned sour is the most frightening, and Mary was not sure whether her undying nature could withstand alien technology, so she could only obediently help Batman resolve the trouble.
Soon, Vampire Flash appeared before everyone, clearly under control, his eyes constantly emitting a red glow. Mary transmitted some information to him, and when he came to, he reluctantly glanced at Batman.
Accompanied by a flash of golden light, Green Lantern appeared before everyone. He was still pale, looking very unwell, clearly suffering from excessive blood loss.
Superman picked him up and flew towards the hospital, and except for Starfire who had to keep an eye on Mary, everyone else rushed to the hospital.
After a medical examination, it was found that Green Lantern was not injured, just suffering from too much blood loss; after a blood transfusion, he was alright.
The other members of the Justice League gathered around the hospital bed, but Vampire Flash also arrived. Just as he was about to enter the room, Batman closed the door on him. Hal glanced in that direction and slowly shook his head.
"I am curious how you got bitten by him," Wonder Woman said, arms crossed. "Couldn't the Green Lantern energy even protect your own neck?"
The others obviously had similar questions. The Divine Speed was indeed formidable, but under full power, Hal should have been able to cover his whole body with Green Lantern energy, making it difficult to get bitten.
Hal looked somewhat guilty, cleared his throat, turned his head to the side, and said, "He hugged me, and I did not know he was going to bite me. I can't just cover my whole body with energy every time you guys hug me, right?"
"So why did he hug you?"
"Uh, just a hug of friendship..."
Hal's voice got softer and softer because he saw Batman giving him a disapproving look. He hemmed and hawed for a while, then said, "Alright, actually he didn't succeed at first. I pushed him away."
"But..." Hal paused, then took a deep breath and said, "He said he was very hungry, and hunger was causing him a lot of pain. I thought that even giving him just a little..."
Wonder Woman raised her hand with a "tch" sound, turned away, Superman helplessly shook his head, Martian Manhunter rubbed his temples, and even Cyborg stepped back against the wall.
"He pleaded with me, and I could not turn a blind eye," Hal tried to defend himself. "If an old comrade had begged you like that, you would have been soft-hearted too!"
"Mind what ring you are wearing!" Wonder Woman yelled at him. "Where is the willpower of the strongest in the cosmos?!"
"It's different," Hal said. "He really was in pain, I really intended to help him just that once."
The members of the Justice League each left the room and upon seeing Vampire Flash standing by the door, it seemed they all wanted to say something but ended up holding back.
As he walked out, Batman said, "Luther just contacted me; he says he has a strategy to revert vampires back. I'm going to Metropolis for a bit, you guys head back to your cities and prepare defenses."
When the others returned to the Justice League Hall,
they were surprised to find Constantine. The trenchcoat-wearing man quickly dodged to the side, evading a punch from Wonder Woman.
"Don't get excited, Diana, I am here on serious business, I assure you."
Constantine took out a small bottle from his pocket. "This is Zan's spirit. But I advise you not to return it to him right now. His reasoning has been affected by the vampire bloodline. Before he gets cleansed, he might have high aggressiveness."
Wonder Woman glared at him with annoyance, but still reached out to take the bottle. Jenna rushed out from upstairs, hurrying to Wonder Woman's side.
"Don't worry," Wonder Woman said, patting her head. "Batman has gone to find a reversal method, there should be news soon. Your brother will recover then."
"I know," Jenna replied, not showing urgency. She nodded, then continued, "I trust Batman will find a way. I just wanted to ask..."
She turned her head to Constantine and asked, "Whose spirit was controlling my brother's body before?"
"This..." Constantine dodged the question, "Magicians don't know everything, I am only responsible for delivering..."
Before the light from the Teleportation Magic could illuminate, Constantine's coat was grabbed. Jenna narrowed her eyes at him, to which Constantine sighed and said, "Not every question needs an answer, just like not every romance needs to begin and end. Girl, I'm doing this for your own good."
Jenna rolled her eyes and said, "What are you thinking? I just want to thank him in person, after all, if it weren't for him, my brother might have already gotten into big trouble."
"Gratitude?" Constantine said disdainfully, "By the time you meet him, you might want to do more than just thank him."
Then he was picked up by Wonder Woman again and could only say helplessly, "Alright, I can take you to see him, he really likes little lambs like you."
Shiller was sitting in the Green Lantern's hospital room, Vampire Flash had disappeared, and now only Hal was left.
Shiller poured him a glass of water and placed it on his bedside, saying, "I'll suggest to Batman that Mary give Barry an order to listen to you, until he is transformed back."
Hal looked hesitant, his fingers interlocked and tightly twisted, he tentatively asked, "Does he have to be transformed back?"
"You don't want him to become human again?"
"I'm just very worried," Hal said with a touch of sadness, "I know Barry very well, if he returns to normal, he may not be able to accept what he's done."
"He won't accept that he hurt you."
"It's not just that."
"But surely that's the most important part," Shiller said. "Those memories of him hurting you, making you weak and in pain, will become a shadow over his life, whether you forgive him or not."
Hal's wavering became more intense as he said, "Yes, that's what I'm most worried about, it would prevent us from being able to interact as we did before, forever."
"If you can't accept the changes that come with moving forward, then maybe it's not a bad choice to stay put."
"But that wouldn't be fair to Barry," Hal tightened his grip on his fingers, looked up at the ceiling, and said, "I can't ask him to be a vampire who must live out of the sunlight forever, sustaining himself on human blood, it's just too..."
"There are solutions for these problems," Shiller's fingers moved slightly, then he said, "Gordon's daughter, Barbara, managed to deceive Batman Family for decades with hospital blood bags and a special blood from the Alien Princess."
Suddenly changing the subject, Hal looked at Shiller and said, "I heard from Batman that you're also a psychologist."
"Not very experienced."
"I can tell, because usually psychologists don't use words with such a predisposition."
"If I were really biased, you wouldn't be able to tell," Shiller replied.
Hal did not argue, but after some serious thought, he said, "Still, we need a normal The Flash, Batman will never trust a vampire."
"Then go to the past to find one, Batman can do that," Shiller stood up, adjusted the angle of Hal's bed, then said, "You need to trust that right now you only have to make choices about you, about you both, and as for Batman, he will handle everything on his own."
"I don't want to put extra pressure on him, he's already got enough on his plate, but regarding Barry, I still think, if I don't let him come back because I'm worried about our relationship souring, that would be very selfish," Hal said.
"You're not stopping him from coming back, you're just letting him make his own decision," Shiller said.
"But he's a vampire now, he definitely won't want to come back!"
"Then you're just respecting your friend's wishes."
"I know I can't fool myself."
Shiller shook his head and said, "The fact that you're here discussing this with me shows that you have a strong desire to deceive yourself, you just can't find a reason that convinces you."
"Can't you convince me?"
"Sorry, I can't, but if you want, maybe you can ask the normal The Flash. Aren't the decisions he made in the past also his decisions?"
Hal fell silent, but Shiller knew he had made a decision and was also very aware of what the normal The Flash would decide.
No sooner had Shiller stepped out of the hospital room than he saw a petite figure standing at the end of the hallway.
Shiller had actually never seen the girl, but from the style of her uniform, he could tell she was Zan's sister, the other half of the Magic Twins.
"Hmm, hello," Jenna said with a smile, and asked, "Was it you who controlled my brother's body before?"
Shiller returned the smile and said, "I'm sorry, but you were deceived by Constantine, it wasn't me who controlled your brother's body, or rather, it was another 'me'."
Jenna immediately widened her eyes and was about to curse Constantine through gritted teeth, but in the end, she didn't say much more and just nodded at Shiller, "Then do you know where the person who helped my brother is?"
In the end, Jenna found Moonlight Shiller at Wayne Manor. Ah, as soon as she saw him, Jenna was sure that it was the person who had impersonated her brother that day, she rushed up and hugged Moonlight Shiller, then said, "You are much taller than I imagined, thank you for that day. If my brother had really gone berserk at the Justice League headquarters, things would've been many times worse than now."
Moonlight Shiller shook his head, but still extended his hand and gently patted Jenna on the back, while Khonsu stood at an angle only Moonlight Shiller could see and mouthed something to him.
"Really not considering the Hippo Goddess's proposal?"