Mason wanted to discuss the issue of enhancement potions with the real "professional", Dr. Lizard. He believed that Dr. Conners could provide some very useful help to his alchemy skills.

However, it wasn't a good time to discuss techniques. Another tremor struck as they were talking to Dr. Lizard.

This thing was like a heavy burden pressing on everyone, even the usually optimistic Barbara couldn't smile anymore. They continued to move forward under the guidance of Dr. Conners, towards the other side of this vast underground cave.

It wasn't a comfortable journey, especially with the "Lizard People" who had adapted to underground life lurking in the darkness.

The thought that these creatures were once living humans who had willingly transformed into this state for survival in the apocalypse sent chills down the spine of kind-hearted Barbara.

After a ten-minute journey, a small, peculiar hut appeared before them.

It was built at the fork of a cave, surrounded by light strips and a generator that was running without much noise.

Its appearance was full of post-apocalyptic punk vibes. The exterior of the house was a modified shell of a large transport vehicle, resembling a large troop carrier.

Next to the house, which was emitting light, was a strange robot shell modified into a barbecue grill.

A large amount of miscellaneous items were scattered around without any order.

A salvaged refrigerator was half-open, filled with discarded cans of homemade beer. As the four approached with strange expressions, they could even hear music coming from inside the house.

It was pre-war music, soft blues accompanied by a terrible violin solo, turning what could have been pleasant music into a form of torture.

"Knock, knock, knock."

To spare everyone's ears, Old Spider politely knocked on the door.

"Just a moment."

A leisurely voice sounded from inside.

The voice made Spider-Man's face change, but it was too late to leave. The next second, the welded door was opened.

A scruffy, overweight man in his fifties or sixties poked his head out and glanced around. He had a round face with a pair of flirtatious black sunglasses, and his messy hair showed signs of thinning.

He was wearing a loose, semi-old long shirt with the famous anti-war slogan "akeLoveNotar" on it.

He had the air of an old hippie.

Even the slow expression on his face was identical.

"Hey! Peter!"

This guy opened his arms in surprise at the sight of Spider-Man, who had taken a few steps back. He looked like an enthusiastic acquaintance, but Spider-Man backed away cautiously, crossing his hands in a "stay away" gesture.

He asked suspiciously, "Dr. Otto? What's this?"

"Ah, I'm glad you still remember my name, instead of calling me 'Doctor Octopus'."

The owner of the hut nodded in satisfaction, not hiding his identity at all. He stood at the door in his fluffy octopus slippers, patting his empty shoulder and said to the four visitors:

"Don't worry, everyone. The mechanical assistant that affected my thinking has been dismantled and discarded by me. I haven't touched it for three years. Look!

Those bad things are right there!

In the past few years, I have self-studied spirituality and meditation to adjust my thoughts, and my life and life have returned to the right track.

The only regret is that when I realized the value of peace, the world had already perished.

But it doesn't matter.

Even in the apocalypse, we have to take care of ourselves, right?

Come on, come on, the cake I made is almost baked. If you don't mind the extra sugar I put in, I'd be happy to share this delicacy with you."

Mason turned his head to look in the direction of the seemingly mentally unstable Doctor Octopus's chubby finger.

Sure enough, in the garbage pile next to the barbecue grill built from the rusty and discarded body of Ultron, there were four silver-gray, fierce mechanical tentacles.

Due to the lack of maintenance for a long time, the thing looked terribly gray, coiled up like a dead iron snake.

There was no sign of the glory of high-tech destructive creation.

"I'm glad to see you've found yourself, Dr. Otto."

After understanding the truth of the matter, Spider-Man breathed a sigh of relief and congratulated him.

Although the world was ending, having one less troublesome enemy was always a good thing.

And just like Dr. Conners just now, this chubby and kind professor in front of him was also a person who had greatly inspired and encouraged Peter Parker in his youth.

Even though they became his enemies due to a series of events, in Peter's heart, these two have always been "teachers".

But now he was not in the mood for any octopus cake.

He took off his mask and walked into the punk-style room, saying to Dr. Otto who was humming a song and busily opening a peculiar oven modified from a particle cannon:

"Doctor, I came because of the increasingly intense tremors recently. I know it has something to do with what the Osborn Tower is excavating. Dr. Conners told me you could give me an answer.

What exactly is the tower..."

"Gravitonium."

Dr. Otto sniffed his baked cake, tasted the cream with his finger, then nodded in satisfaction. As he put it on the table, he casually answered:

"What the tower is mining is Gravitonium. You may not have heard of this thing, which is normal, after all, your research direction as a student did not involve high-energy physics.

How should I explain this thing to you?

Let me think with my almost rusty brain."

The former Doctor Octopus spoke, then picked up a half-length samurai sword marked "Hawkeye" and modified into a dinner knife to cut the cake, enthusiastically sharing it with Barbara and Two-Barrel who had entered the room.

Batgirl looked at the cake in her hand and then at Mason. The latter nodded at her.

So Barbara showed a sweet smile to Doctor Octopus to express her thanks, then sat down and began to taste this rare delicacy in the apocalypse.Er Tong refused the food.

He didn't like this sweet stuff. He felt that indulging in it would make him relax his vigilance.

His gaze fell on the "violin" that Dr. Otto had placed on the worn-out sofa. The thing was made by welding a silver-gray thing similar to a motorcycle helmet and a piece of an extraordinary-looking gun barrel.

It had a post-apocalyptic feel to it.

"The Gravity Hammer, a rare natural mineral hidden deep in the earth's core, also known as magnetite, is a special chemical element aggregate that has never appeared on the periodic table.

Its biggest characteristic is that when these elements are pierced by high-voltage current, their physical properties change and can affect gravity."

Mason stood at the door and whispered to the people in the room:

"But the mining of the Gravity Hammer is very difficult. As part of the Earth's gravity system, they have always been hidden near the Earth's core... No wonder the Green Devil built such a big mechanical tower to complete the mining.

No wonder the gravity in this world is slightly weaker than normal.

Everything makes sense now."

"Very accurate, this knowledgeable young man!"

Dr. Otto clapped his hands in appreciation of Mason's explanation, praising him like a student:

"It's very impressive that you know so much at your age. It reminds me of Peter back in the day, who was just as knowledgeable and talented as you. Unfortunately, he has become an alcoholic now.

Look at his belly, my goodness, how long has it been since he exercised properly?

But you guys are outsiders, right?"

Dr. Otto pushed his tea-colored sunglasses up his nose and, while eating his cake, looked at Mason and the other two, saying:

"The knowledge about the Gravity Hammer was passed to this world from your colleagues, and even the cause of this war and the apocalypse is related to it.

This rare element that can artificially change gravity is not available in every world. In fact, it is also a very rare resource in parallel worlds.

Unfortunately, our world's core stores an excessive amount of Gravity Hammers.

After the apocalypse, for more than three years now, the Osborne Corporation has built mining towers all over the world and has sent too many precious resources to your organization.

Their excavation has caused Oceania to sink into the sea, Asia to experience terrible ground collapses, and Neon Island to be torn apart by an earthquake a few months ago.

The Gravity Hammers there have already been completely depleted!

And now, Osborne has set his sights on North America...

Their excavation has obviously exceeded the safety limit. The change in the world's gravity is just the beginning. If it is not stopped, the rotation of this world will be affected in no more than half a year.

In fact, if you have observed the moon, it is not difficult to see that the change in gravity has already begun to affect the Earth-Moon system.

And the tremor that occurred in New York City is the side effect caused by the Osborne Tower extracting the Gravity Hammer from the Earth's core. But obviously, the Green Devil has strictly defined the gravity impact zone."

Dr. Octopus shrugged his shoulders, stuffed the last bite of cake into his mouth, and said to the three dumbfounded people in front of him:

"He wants to destroy this zombie city and bury all of us survivors hiding underground! Unless Peter and Conners give him what he wants.

Yes.

Don't look at me hiding here for so long, but I have never stopped observing the outside world."

"Dr. Otto! How do you know all this so clearly?"

Peter looked at the unusually calm "old friend" in front of him with some suspicion. Under his questioning, the chubby doctor wiped the cream from the corners of his mouth, mumbled unclearly, and said:

"Because the Osborne Tower... um, I mean, the mining device they used to excavate the Gravity Hammer was designed by me. They originally looked for Tony Stark, but that guy who left with a group of people refused to take it.

Wakanda was destroyed in the Battle of the Apocalypse, and Banner was captured as a beast. Looking at the world, I am the only one who can complete this design."

At this point, Dr. Otto showed a very complicated and ambiguous smile.

He turned around and adjusted the blues music playing on the radio to a softer nocturne, facing away from the four people, and said:

"This world is destined to be destroyed, Peter, and our foreign friends. The reason why we can survive for three years after the apocalypse is not because we are lucky.

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It's just because they need the resources produced in our world.

This is both lucky and unfortunate.

It's like escaping death but being sentenced to life imprisonment."

At this point, Dr. Otto turned around and looked at his student, Peter Parker, with a meaningful look, and said:

"Everyone who survived has lost a lot, so we should cherish everything we still have. I don't want you to understand this only when you reach my age, Peter.

I heard from the private radio broadcast of your shelter that you drove Gwen away...

You made a wrong choice."

"That's between me and Gwen, Professor. Let's not talk about it, okay?"

Spider-Man obviously didn't want to discuss this issue. He changed the topic and said:

The problem now is that Osborne intends to bury us, and I don't want to lose again. I couldn't protect my city, and the people in that shelter are my last family.

I want to stop him!

Doctor, I need your help."

"Of course, of course, I am willing to help you, Peter. Consider it compensation for all the trouble I caused you during my crazy period."

Dr. Otto was very accommodating and opened his metal drawer, taking out a black USB drive and handing it to Spider-Man, saying:

"These are some 'little things' I took when I left the Osborne Tower. Insert it into any socket of their defense system, and it will temporarily paralyze their internal security system.

I also have a blueprint of the internal structure of the Osborne Tower.

But I can't go with you to beat those increasingly outrageous guys. Removing my mechanical tentacles was not without cost.

I can't put them back on anymore."

"That's enough."Barbara wiped the cream from the corner of her mouth and said, "With this, I can hack into the Osborn Tower system and shut it down remotely."

"Wow, the technology in this mini computer is impressive."

Dr. Otto immediately noticed the peculiar computer on Barbara's wrist. Rubbing his hands together, he said, "May I take a look? I promise I won't break it, young lady. This thing seems to be at least a generation ahead of my technology. It's quite rare.

Those people who tried to take me away showed me something similar, saying that if I left with them, I could get my hands on these gadgets.

I regretted refusing them for a long time."

"Mason, why don't you discuss some technology with Dr. Otto?" Mason nudged his teammate and said, "He's one of the smartest people in the world."

"Smart?"

The amiable, chubby doctor suddenly grinned and said, "I'd have to deduct ninety-nine points from my IQ to be classified as 'smart'. But since I've helped this far, I might as well help you complete the invasion of the Osborn Tower system here.

There's an Electro over there who's quite troublesome.

He's like a 'living firewall', ordinary hacking techniques can't deal with him.

Come with me, young lady, let's see how good this otherworldly little hacker of yours is."

Dr. Otto walked to the other end of his confinement room, where there was an old computer with the Avengers logo next to his sleeping sofa.

Mason glanced at the pile of garbage outside the door and said to the incredibly calm Dr. Octopus, "Mr. Otto, if you don't want those mechanical tentacles anymore, could you sell them to me cheaply? I have a battle mech that lacks an intelligent weapon system.

I can pay."

"Take it, it's free." Dr. Otto waved his hand and said, "It represents my complete break with the past, just like a harmful relationship that needs to be cleanly severed."

With permission, Mason and Er Tong went out to move the heavy, dead-snake-like tentacles from the garbage pile. Mason first cleaned it, then squatted down to examine it closely.

Soon, an information tag popped up:

Psychic Interactive Multi-Function Mechanical Tentacle

Quality: Epic Engineering Item·Exquisite Craftsmanship (Long-term abandonment has led to a decline in quality)

Weapon Traits: Super Strength·Psychic Adaptation·Autonomous Weapon·Self-Upgrading

Weapon Status: Abandoned·Needs Repair·Lacks Energy

Weapon Special Effects:

1. Universal Plugin:

The mechanical tentacles designed by Dr. Otto Gunther Octavius can perfectly adapt to various combat and manufacturing scenarios, and can be integrated into most tech suits and weapon systems.

It can also be considered a "special prosthetic plugin" implanted into mechanically enhanced individuals.

But to use this mechanical tentacle perfectly, it needs to be connected to the user's mind. The mechanical intelligence of this item will interfere with and influence the user's thinking.

2. Intelligent Weapon:

The mechanical tentacle has a powerful AI. In most cases, it does not need the user to issue commands to engage in combat, reconnaissance, and assist in manufacturing.

Dr. Otto designed a self-upgrading logic for his mechanical tentacles. When they come into contact with any tech items that can be used for self-enhancement, the mechanical tentacles will attempt to analyze the technology and self-modify.

Warning!

This self-modification program will make the AI of the mechanical tentacle smarter, and its influence on the user's mind will become more severe.

In certain specific situations, the AI will attempt to replace the user's thinking in order to better fulfill its original mission, which is to help and protect the user under any circumstances.

Current AI intelligence level of the mechanical tentacle: Assistant-level weak artificial intelligence.

Creator: Otto Gunther Octavius

Item Description: Once this thing grips something long and hard, it will treat it like a screw and twist it. Its minimum output is five tons! Therefore, I warn you not to use it for some strange things!

"This indecent description is enough!" Mason complained.

Then he threw out the Fenrir Armor. He planned to install this thing into his Fenrir Armor and make it part of the weapon system to replace the non-lethal weapons of the master.

But before Mason could start the modification, Spider-Man came out, holding a cigarette in his mouth and said to him, "When are you planning to head to Osborn Tower?"

In the rising smoke, the burning cigarette butt was thrown on the ground and stomped out. The middle-aged man with a belly full of excess fat said in a low voice, "If possible, count me in!"