Summon the Villain: Marvel.

"Even if it's a trap set by Hydra, I'm going to go."

As night falls, the streets of New York City appear quiet and peaceful. However, in this seemingly peaceful city, the agents of SHIELD are carrying out a rescue mission because their colleagues are under attack by a "suspected" Hydra organization.

Captain America Steve Rogers leads a team of SHIELD agents through the streets of New York City. Steve's blue uniform flickers under the street lights at night, and his shield hangs on his back, ready to go at any time. He knows the importance of this mission because the lives of their colleagues are at risk.

The agents hurried to an abandoned factory building. According to intelligence, members of the Hydra organization have trapped colleagues from SHIELD here. Steve quickly ordered the team to split into two groups, one group stayed outside the building, and the other group followed him into the building.

They moved silently through the dark corridors of the building, their steps determined and tacit. Steve's hearing was extremely sensitive, and he waved his hand gently, signaling the team to stop. In front of a slightly open door, he heard a low howl, which was the voice of their colleague.

Steve pushed open the door and rushed into the room quickly, holding his shield in front of him to block the sudden bullets. His team members followed behind him, aiming their guns at the Hydra members lurking in the darkness.

The battle broke out, bullets flew, sparks flew. Steve was like a duck in water on the battlefield, his shield could not only be used to block bullets, but also to repel enemies. He dodged the attacks of the Hydra members, swung the shield hard, and knocked an enemy away.

The team members also performed well, their shooting was accurate and powerful, knocking down the Hydra members one by one. However, the members of the Hydra organization did not seem to give up easily, their offensive became more and more fierce, and the numerous enemies gradually put the agents in trouble.

At the critical moment, a loud bang resounded throughout the room. One side of the building's wall was blown open, smoke and dust filled the air, and the Hydra members were shocked and fled in all directions. Steve looked up and saw a familiar face.

\"Hawkeye, you're here!\" Steve said happily.

Hawkeye leapt into the room, his bow already equipped with a special explosive arrow, and he quickly released an arrow, completely destroying a wall in the room, creating a storm-like attack.

In the smoke-filled room, Hawkeye's arrival brought new hope to the SHIELD agents. His bow and arrow were like a magical weapon. With one arrow, a wall was blown up, the Hydra members fled in all directions, and their vision, which was confused by the smoke, became clear again.

The members of Hydra regrouped, and they were not discouraged by Hawkeye's arrival, but became more crazy and stubborn. Bullets, laser beams, cold beams and other attacks continued to pour into the agents. Steve Rogers waved his shield, blocked a laser beam with his body, and then threw the shield at a Hydra member with his backhand, knocking him down.

Hawkeye was like a fish in water on the battlefield, his arrows aimed at the enemy's vital points, and each shot was able to hit the target accurately. He shuttled between the rooms and changed positions quickly, making it difficult for the Hydra members to lock on to his position.

The agents are also constantly attacking, and their tacit cooperation makes them an invincible force. However, the members of the Hydra organization seem endless, and their number makes the agents gradually feel exhausted.

Just when the battle was at a stalemate, a tall Hydra member wearing silver armor suddenly appeared in the center of the battlefield. His silver armor was gleaming and looked extremely powerful. The face of this Hydra member was covered by a mask, and his true identity could not be seen.

\"You Avengers, what a ridiculous bunch of guys." The voice of the silver armored member was cold and ruthless. He raised an energy sword in his hand, ready to launch an attack.

"Be careful of the weapon in his hand." Hawkeye warned not far away.

Steve Rogers frowned, he knew that this silver armor member was not an ordinary enemy, his strength and equipment were far beyond the ordinary. However, Steve never backed down easily, he raised his shield, ready to meet the challenge of this powerful enemy.

"who are you?"

"Crossbones. Remember."

Steve Rogers faced off against the silver armored member named Crossbones, and he looked at his new opponent solemnly. Hawkeye and the other agents also watched nervously, knowing that this battle would decide the outcome.

Crossbones suddenly attacked, his energy sword slicing through the air with a sharp buzzing sound. Steve reacted instantly, raising his shield and deflecting the blade with a sound of metal clanging. He felt a huge pressure, Crossbones' power was beyond his expectations.

\"You're a real tough guy, Crossbones.\" Steve said through clenched teeth, his muscles tensed, trying his best to resist Crossbones' attack.

Crossbones didn't respond, his attacks continued, the blade flashing with dangerous energy. Steve had to keep moving, avoiding Crossbones' attacks while trying to find opportunities to counterattack.

The battle was in full swing, and Hawkeye and other agents were also fully supporting Steve. Their gunfire and arrows continued to shoot at Crossbones, trying to distract him. However, Crossbones seemed unperturbed and his focus on Steve was unwavering.

Steve finally found a chance, and he slammed Crossbones with his shield, trying to interrupt his attack rhythm. Crossbones was shocked and took a few steps back, but he immediately stabilized his body and launched another attack.

\"You still not going to talk?\" Steve tried to communicate with Crossbones and learn more about him.

Crossbones' voice remained cold and emotionless, as if it were a machine. \"I am just carrying out my mission. There is no need to communicate with you.\"

Steve understood his opponent's determination, and decided not to waste words and focus on the fight. His shield blocked Crossbones' attack, while his fists pounded into the opponent's armor. Each collision released a powerful impact, and the structure of the room shook.

Hawkeye and the other agents also kept attacking Crossbones, trying to find his weakness. However, the opponent's armor was indestructible and seemed to have no obvious weaknesses.

Crossbones suddenly changed his attack method, and his energy sword began to release more powerful energy, emitting a dazzling light. Steve had to be extra careful, and his shield was cut by the sword blade, leaving a noticeable scratch.

\"Captain, be careful of his energy sword!" Hawkeye warned loudly, and his arrows also increased their firepower and shot towards Crossbones.

The Hydra members saw their leader, Crossbones, fighting Captain America Steve Rogers, and immediately took the opportunity to launch a counterattack. They regrouped and launched a more fierce attack on the agents, with bullets, lasers, and cold beams flying all at once.

The battlefield fell into chaos, with smoke and flames intertwined to form a magical scene.

Crossbones' energy sword became more and more powerful, and the light on the blade became more and more dazzling. His attack speed was very fast, and every swing of the sword was like lightning. Steve could only do his best to dodge, not daring to be careless.

Hawkeye and other agents are also trying their best to resist the attack of Hydra members. Their ammunition is almost exhausted, but they still hold their ground. The battle has entered a white-hot stage, and every minute and every second is full of uncertainty.

Steve Rogers suddenly saw an opportunity, he suddenly rushed towards Crossbones, trying to subdue him. However, Crossbones was not an easy enemy to deal with, he easily dodged Steve's attack.

Crossbones' counterattack was even more fierce, and his energy sword was almost touching Steve's shield. Steve felt a huge pressure and could hardly hold on. He knew that if he didn't think of a way, he would be defeated by Crossbones.

\"Captain, we have to find a way to subdue him!\" Hawkeye shouted loudly, and he tried his best to shoot arrows at Crossbones, trying to distract the other party.

Steve glanced at Hawkeye, then suddenly turned around, blocked Crossbones' attack with his shield, and kicked at his waist with his legs. Crossbones was kicked and stepped back a few steps, but he immediately stabilized his body.

\"Captain, I will try to distract him while you attack him from behind.\" Hawkeye quickly came up with a plan.

Steve nodded. He understood Hawkeye's intention and began a fierce duel with Crossbones. Hawkeye flexibly shuttled across the battlefield, trying to attract Crossbones' attention so that he had no time to take care of other things. This was a tactical cooperation, and every move had to be accurate.

Hawkeye's arrow aimed at the gap in Crossbones' armor. Although the opponent's equipment was extremely strong, there were always loopholes. His arrow hit Crossbones' shoulder. Although it did not cause fatal damage, it successfully caused pain and attention to the opponent.

Steve saw his chance, and he quickly rushed to Crossbones' back and punched his energy source. Crossbones' armor suddenly made a creaking sound, as if it was disturbed, and his attack slowed down slightly.

\"Now!\" Steve shouted loudly, and Hawkeye increased his firepower, with arrows flying towards Crossbones.

Steve's fist smashed into Crossbones' armor, and at the same time Hawkeye's arrow accurately hit Crossbones' power source. A powerful shock wave burst out, knocking Crossbones to the ground. His silver armor emitted a bright light, and then quickly went out, and he could no longer move.

Steve and the agents thought they had won, and Crossbones' body seemed to have completely lost its vitality. However, just when they breathed a sigh of relief, Crossbones' body suddenly burst into a raging flame, shockingly.

The flames burned fiercely, like a fiery demon emerging from Crossbones' body. His silver armor was engulfed by the flames, making a piercing noise. The agents were forced back by the heat and light of the flames, and they couldn't help but feel a sense of panic.

Steve also felt the threat from the flames, and he quickly raised his shield in front of him, trying to resist the flames. However, the flames were unstoppable, and the impact was so great that Steve was almost knocked to the ground.

\"Everyone spread out and keep your distance!\" Steve shouted loudly, and the agents obeyed the order and quickly spread out, trying to avoid being affected by the flames.

Crossbones' body seemed to have become a burning torch, and his energy source continued to spew out hot flames. Steve struggled to stand up, he could feel the heat of the flames, but he did not retreat, determined not to let this sudden disaster spread.

"It's the Extremis virus, Captain!" Hawkeye shouted with his pupils contracted.