A really thrilling scenario would be Loki and Doctor Strange working together. Their different forms of magic could combine in unexpected ways. Loki's illusions and Strange's sorcery could create a powerful shield or a multi - dimensional trap for their enemies. This would not only be visually stunning but also a great display of their combined power.
Imagine Loki using his shape - shifting ability to infiltrate an enemy base and gather crucial information for the Avengers. He could transform into one of the enemy's trusted allies and then use his magic to take over the base's security systems, allowing the Avengers to launch a surprise attack.
One possibility is that Loki could initially be a reluctant ally. He might have his own hidden motives, like using the Avengers to get closer to a powerful artifact or enemy. But as time goes on, he could start to actually care about the team. For example, in a battle against a common foe like Thanos, Loki could use his trickery to outwit the enemy, creating illusions to confuse Thanos' minions while the Avengers attack from another angle.
A really cool scenario could be Loki using his shape - shifting abilities in a very creative way. He could transform into an enemy's most trusted ally and then manipulate the situation from within. By doing this, he can gather crucial information and use it to save the Avengers at the last minute. Maybe he discovers the location of a bomb or a weapon that is about to be used against the Avengers and is able to disable it just in time.
One exciting scenario is a Quidditch match. The Avengers, being competitive, would want to participate. Iron Man could build some sort of high - tech broomstick or flying device to give him an edge. Another scenario is when they face a dark wizard together with the Harry Potter characters. Their combined powers of magic and superhero abilities would make for an epic battle. And also, the Yule Ball would be interesting. Seeing the Avengers in wizarding formal wear and dancing with the Hogwarts students would be quite a sight.
Thor would be a likely candidate. Since he is Loki's brother, he already has a connection with him. Thor might be the one to convince the other Avengers to give Loki a chance and be the first to reach out and try to befriend him in this new situation.
In this fanfiction, Loki might interact most with Hulk. It would be an interesting dynamic as Loki is a master of manipulation and Hulk is, well, the Hulk. Loki could either try to use Hulk for his own purposes, which would be very dangerous, or he could end up on the wrong side of Hulk's anger. But at the same time, it could also lead to some unexpected moments of understanding or at least a begrudging respect between them.
He would probably interact a lot with Thor. Since they are brothers, there is a pre - existing relationship full of complexity. Also, he might interact with Iron Man quite often. Tony Stark's sarcastic nature and Loki's trickery could lead to some really interesting exchanges, either in the form of verbal sparring or working together on some high - tech and magic - combined projects.
One popular plot is Kid Loki's redemption arc. He starts off causing trouble for the Avengers but then gradually realizes the error of his ways and decides to use his powers for good. Another is where he gets kidnapped by an enemy of the Avengers and they have to rescue him, during which he learns to trust them.
Obviously, Loki is one of the most popular. His complex personality, with his mischievous and often ambiguous moral compass, makes him a very interesting character to write about. Writers can explore his motives, his past traumas, and his relationships with other characters in many different ways.
Thor is also very popular. His relationship with Loki is a key aspect in many fanfictions. His strong - willed and noble nature contrasts with Loki's more devious ways. Also, his power as the God of Thunder adds an exciting element to the stories. He can be shown as the one trying to bring Loki back to the right path or as a powerful ally in battles against common enemies.
Imagine a scenario where they are fighting in a city that has been taken over by an enemy. Ino and Sakura have different ideas on how to rescue the civilians and defeat the enemy. This leads to a fight between them. Ino wants to use her mind - transfer jutsu to gather intelligence first, while Sakura wants to go in guns blazing. As they fight, they also have to deal with the enemy attacks. The city's layout provides different opportunities for both of them. Ino can use the buildings to hide and launch her mind - transfer attacks, while Sakura can use the structures to her advantage for her powerful punches and kicks.