After Mr. Sinister gained his superpowers, he quickly suppressed his exhilaration with his exceptional intellect and then began to fool Apocalypse.
"London is now full of ignorant fools who oppose mutants. They don't even acknowledge the existence of mutants, completely ignoring the glorious history you created," he said.
In fact, Dr. Sinister had no idea what glorious history Apocalypse had; he just wanted Apocalypse to help him destroy London and avenge his own suffering and his wife's death.
Of the entire London, he only thought Darwin was worth saving; everyone else deserved to die.
Upon hearing Mr. Sinister's sweet talk, Apocalypse became displeased. Back in the Ancient Egyptian Era, he had assisted Conqueror Kang in his conquests, earning fame across the land, helped Imhotep lead humans in fighting off the alien insect race 'Brood' invasion, and even founded the Holy Shield Brotherhood.
Though he later went into a pyramid to sleep out of boredom, how could people now forget about me?
Apocalypse decided to announce his return in grand style.
He quickly learned contemporary scientific knowledge and guided Dr. Sinister to perfect a biochemical virus so that he could personally destroy London and exact his vengeance.
This is what a wise old grandfather should do.
Things were progressing smoothly, and London was about to be destroyed silently.
However, two X-Men traveled back from the future and ruined their plans.
Cyclops' abilities were nothing to Apocalypse; with a flick of his finger, he rendered the man with red eyes unconscious.
But Jean Grey was a completely different story.
Originally overpowered by Apocalypse, Jean suddenly transformed into a giant firebird. The Phoenix Force exploded, and with a single strike, Apocalypse knelt.
Seeing the unfavorable situation, Mr. Sinister instantly made a run for it, exhibiting great proficiency in selling out his teammates.
Phoenix Jean, however, had no interest in capturing him. She merely grabbed Apocalypse and took him back to Egypt, using the Phoenix Force to reseal him in a hidden pyramid, then hurriedly dragged Cyclops back to the future.
Jean also had her fears. Even though she had controlled the Phoenix Force outbreak in the main dimension, she could feel a gaze from Nepal crossing space and landing on her, a calm gaze that made the Phoenix Force within her uneasy.
Thus, Mr. Sinister gained both strength and freedom, never forgetting the sight of London at night, with that fiery red Phoenix soaring through the sky.
It was the most beautiful and powerful force he had ever seen.
Afterward, he resolutely continued his previous research on mutants, planning to replicate the Phoenix Force in his lab.
Being a scientist, he wasn't good at making money, even with his newfound powers, so he altered his appearance and blended into the United States.
Once mutant research began in Germany, he was the one who suggested to the President of the United States to start a technology race. He drove and participated in almost all of the U.S. human weapons programs, from Captain America's serum to Torchman's synthesis, to hunting down mutants, his presence was everywhere.
Isn't it better to conduct research using other people's money? The Americans were like nouveau riche with more money than they knew what to do with, and Mr. Sinister's research advanced significantly.
He lurked in the U.S. for decades, and eventually, his fake identity even allowed him to travel and drink with the President, while Old Luo praised him as the greatest biologist in U.S. history.
Compared to him, Dr. Erskine and others paled in comparison and could only act as his assistants.
However, after the United States and Germany went to war, Dr. Sinister left the U.S., abandoned his original identity, and defected to the Supreme Leader, as Germany now appeared stronger and more likely to achieve victory, aligning more closely with his own beliefs.
Xiaohuzi: "Survival of the fittest, the noble race should have everything."
Sinister: "Survival of the fittest, the superior race should be worshipped."
Both: "Comrade!"
Yet, they spoke of different things, one about the Aryan people and the other about mutants...
Mr. Sinister was adept at disguise, so he became the Supreme Leader's chief biological science advisor, earning Little Huzi's trust. Any biochemical challenges were immediately assigned to him, with the Third Empire fully supporting his experiments.
But his primary project wasn't about the Atlanteans, rather, it involved another secret Nazi plan.
As for research on Namor, he initiated it himself upon learning that Hydra had captured Namor, when he actively requested a sample of Namor's limb to study the genetics of mixed-blood mutants.
His small goal was to first clone a billion Namors!
By then, he could quietly wait for the Phoenix to appear and then take the Phoenix Force for himself to rule the world.
At that point, no one could persecute him anymore...
Out of malice towards London, Sinister secretly returned to London with his men, because this research was related to the Atlantean throne, so U Demon sent subordinates with equipment and supplies across the English Channel to assist him.
The explosions sensed by the Kobolds earlier were not related to explosives, but rather Sinister using his own energy to carve out a new laboratory.
The experiment wasn't as smooth as expected; humanity's technology was still no match for nature's craftiness. The hybrid mutant experimental products consistently failed to meet Sinister's standards.
Therefore, he became irritable and blamed the unsatisfactory lab. To vent his frustration and conceal his actions, he began tearing apart the Earth with his bare hands.
That small door was the entrance to his new laboratory. When Su Ming and others arrived and fought outside, he was slaughtering Kobolds further beneath the earth.
He had just opened a passage to the Underworld below, not expecting a hidden world beneath London's sewers where he encountered these filthy creatures that made incessant noises, so he slaughtered them all.
He didn't know what these creatures were, but he saw no evolutionary potential in them, and they were too ugly.
After killing these creatures, he vented his anger sufficiently and was planning to return above to check things out since the equipment and lab instruments needed relocating.
But something unexpected happened again. As soon as he came up, he encountered a bizarre man in a pirate hat, smelling awful, poking around his lab.
Sinister's telekinesis erupted, blasting the strange man out, propelling him at two Mach speeds. No one could survive such an attack.
He could also fly using telekinesis at the same speed, but he first used telekinesis to protect himself and leisurely walked out to see who dared to be so bold.
This is what happened before Su Ming and he met.
"Oh? It's actually New York's strongest assassin, the name Deathstroke is familiar to me; it's truly an honor to meet today." Dr. Sinister, upon seeing Su Ming, couldn't help but pause for a moment but quickly nodded gracefully in acknowledgment.
Yet Su Ming remained vigilant. While Thanos and Apocalypse were obvious dangers like lions and tigers, Mr. Sinister was like a poisonous snake, deceitful and treacherous beyond words.
He was a mad scientist with 'persecution paranoia,' who never felt safe and constantly wanted to kill anyone he considered a potential threat to eliminate future problems.