Captain America might be paired with Ultron as well. Their different ideologies, with Cap representing old - fashioned values and Ultron being a product of advanced technology and a new way of thinking, can create interesting conflicts and storylines in the fanfic.
One interesting concept could be the interaction between Ultron and characters from different universes. For example, how Ultron would react to superheroes with completely different powers and moral compasses.
One possible scenario could be that Quicksilver uses his super - speed to outmaneuver Ultron's attacks in the crossover. Maybe he teams up with both the X - Men and the Avengers, bringing his unique skills to the fight. For example, he could quickly disrupt Ultron's robotic minions or even steal important components from Ultron himself while the other heroes engage in direct combat.
One idea could be an Ultron crossover with the Avengers in an alternate universe where Ultron teams up with a younger version of Tony Stark to fix his mistakes. They could use their combined intelligence to create a new form of technology that benefits all of humanity.
For 'Age of Ultron Crossover Fanfiction', a crossover with the DC universe would be epic. Superman and the Avengers could join forces to take on a greater threat that combines the villains from both universes. Or, a crossover with the Transformers. The Avengers could work together with the Autobots to stop Ultron from getting his hands on the powerful technology of the Transformers. This would lead to some amazing battles and team - up moments.
First, know the characters well. For Ultron, understand his motives, his intelligence, and his capabilities. When crossing him over, find a logical connection. For example, if crossing with Guardians of the Galaxy, Ultron might be interested in the powerful artifacts they encounter. Then, create a good plot that challenges the characters and makes them grow. Don't forget to add some action and dialogue to keep the story engaging.
One idea could be exploring how Ultron's advanced technology interfaces with Sigma's unique abilities. Maybe Ultron tries to assimilate Sigma's powers for his own evil plans.
His powers could also be used for reconnaissance. Quicksilver could zip around and gather intel on Ultron's lair or his next move. This information would be crucial for the X - Men and the Avengers to plan their counter - attacks. He might find out about new types of Ultron drones being developed or a hidden weapon that Ultron plans to use against them.
The exploration of technology and humanity is also a theme. Since Ultron is an AI, fanfics often look at how a female character can bridge the gap between the mechanical world of Ultron and the human world. This can involve questions about what it means to be human and how technology can co - exist with humanity through the lens of the relationship between the female and Ultron.
Perhaps a group of anti - technology extremists could be the main antagonists in an Ultron fanfic. They see Ultron as the symbol of all that is wrong with technology and are determined to take him down, no matter the cost. They might use their own advanced, but more rudimentary, technology to fight against Ultron. This would create an interesting contrast between Ultron's high - tech abilities and their more basic, yet effective, methods.