John didn't bring out the character here. He would be brought out when it would be appropriate time. John before leaving looked at the cave nearby. He could see there were still deviants in that cave but he didn't kill them.
If he killed them all, it would just make the whole story very boring. So John just gave a glance at them and left. He would wait for them again.
In London. He just hoped that the deviants would show up for Sersi and Sprite.
John then vanished from his spot and reached London. It had been a long time since he was back here. He loved the city so he roamed around a bit. He had already found out the location of Dane Whitman. It was evening at that point so when John searched for him, he was at a bar with Sersi.
And as the story should have progressed he asked her to move in with him. And Sersi wanted to move in but age was what stopped her. Dane wouldn't be able to live for almost eternity like Sersi.
John kept an eye on everything but and as expected a deviant did attack Sprite, Sersi and Dane. The deviants needed to absorb the genes of Eternals to evolve and thus they had started attacking all the Eternals.
Even though Sersi and Sprite were good, they weren't as powerful as Ikkaris and others. The deviant was easily able to overpower them and Ikkaris finally showed up to save them.
"Now, this is his time to shine." John mumbled.
As Ikkaris tackled the deviant on a nearby shop, John who was high up in the air was hidden and brought out Clark.
"Clark. I guess you know how you have to act and all the related problems of this universe." John said Clark was levitating near him. He brought him out near him. As the deviant got up he was blasted by Ikkaris by his laser eyes.
Ikkaris then came out and said.
"Hello ladies." and gave a cheeky smile. But before he could even look at Sersi he himself was blasted by a laser. He was thrown back a few metres. Sprite and others who saw this were aback. They didn't expect to see such a scene.
When they turned back they saw a man wearing a black suit with a cape behind his back. And there was a symbol of chest on his chest.
"Hey, why did you do this? He is on our side. That monster is a deviant." Sprite shouted as he saw his secret love being blasted by this new guy.
"We know what they are." came a voice behind their backs. They turned around only to see a guy who was close to legendary. The only person whose identity was unknown from the whole team of Avengers.
"Dr. Fate." Dane mumbled.
"Then if you know who they are, why did Batman attack?" Sprite said as she thought he was Batman. The videos of Mars suggested that Batman was a Kryptonian.
"To correct you, he isn't Batman. He is Superman. Batman is Kryptonian for other reasons. And the thing about Ikkaris is different."
"Do you know us?" Sersi asked as she was surprised that Dr. fate knew Ikkaris.
"You don't think that only Eternals have been the secret protector of the planets now. Do you?" John asked. Ikkaris, who was being thrown away finally got up and flew straight to Superman. He had never been hit by somebody like that before.
He had always been on top. With his flight, strength and his eyes. Now he saw another guy doing this to him. So he charged against him without even thinking.
Clark, who had just levitated down and saw the approaching Ikkaris. he just smiled and moved his foot a little and directly punched Ikkaris on his back. The punch was so powerful that it just changed the trajectory of his flight and stopped him on his tracks. (imagine the punch Luffy gave to Bellamy)
Ikkaris fell on the ground with a loud scream. Meanwhile the deviant who was blasted away saw the opportunity and decided to attack Ikkaris who was beaten down but before it could take a step spears were thrown at it from multiple sides.
And the next moment it was dead.
Sersi, Sprite and Dane just had their eyes opened of what had just happened. They thought that Dr. Fate and Superman didn't know who the real enemy was and wanted to stop him. But it was totally contrary to their beliefs. Ikkaris was beaten down and the deviant was killed before it could even lay a finger on anyone.
"Why are you doing this? We are on the side of humanity. We have protected you all since ages." Sprite asked as she was close to tears. She saw her beloved Ikkaris on the ground, unconscious. She had never seen him beaten down so easily and that too in only two moves.