There's a fanfiction called 'Loki's Influence on Thanos'. It delves into how Loki's wily and intelligent nature starts to make Thanos question some of his more brutal ways. It's really interesting to see how their personalities clash and yet find some common ground. Also, 'Thanos and Loki: A New Beginning' is a story where they start a new chapter in their relationship after a major event in the Marvel universe.
One interesting Thanos x Loki fanfiction could be 'The Unlikely Alliance'. In this story, Thanos and Loki are forced to work together due to some cosmic threat. It shows their complex relationship as they both have their own motives but need to cooperate. Another good one is 'Thanos' Redemption through Loki'. Here, Loki somehow becomes the key to Thanos finding a different path than destruction.
I'm not sure specifically about Loki x Thanos mpreg fanfiction. Fanfiction can cover a vast range of pairings and themes, but this particular one might be quite rare or not very mainstream. You could try searching on some large fanfiction platforms like Archive of Our Own to see if there are any works of this kind.
One great Thanos x Loki fanfic is 'A Meeting of Titans' which explores an alternate universe where they form an unexpected alliance. It delves deep into their complex characters and the power dynamics between them.
One popular 'Peter Parker x Loki fanfiction' is 'The Unlikely Alliance'. It explores a scenario where Peter and Loki have to team up against a common enemy in New York. The story is great as it shows the contrast between Peter's naivete and Loki's cunning, and how they gradually come to respect each other.
Power is a common theme. Both Thanos and Loki are power - hungry in their own ways. In fanfictions, they often either compete for power or try to use each other's power for their own goals. Another theme is redemption. Sometimes Loki is seen as a way for Thanos to find redemption, or vice versa.
You might try fanfiction websites like Archive of Our Own (AO3). They have a large collection of fan - created works. Just use the search function and type in 'Thanos x Loki' and see if there are any stories related to the specific 'legs' aspect you're interested in.
Another possibility is that Loki teams up with other characters. He could form an alliance with the Avengers or some other powerful beings in the universe. Together, they could come up with a plan to stop Thanos. Loki could contribute his unique skills, like his ability to shapeshift and infiltrate Thanos' ranks, and then they could launch a coordinated attack.
In a Loki x Thanos mpreg fanfiction, a potential plotline could be that the pregnancy is part of a prophecy. Loki and Thanos have to deal with the implications of this prophecy, whether it means the child will bring great power or destruction. There could be a lot of internal struggle for Loki as he contemplates his role as a soon - to - be parent, especially considering Thanos' nature. And Thanos could be using the situation to gain an advantage over his enemies, all while trying to protect Loki and the unborn from those who would oppose them.
Well, perhaps in this fanfiction, Loki is cursed to be attached to Thanos' legs for a period of time. This forces them to work together in a very strange way. Loki tries to use his wits to find a way to break the curse, while Thanos is frustrated by Loki's constant attempts at trickery. Along the way, they might encounter other characters from the Marvel universe who are both amused and confused by their situation.
Perhaps the main antagonist could be Loki himself, at least in the beginning. Since he got involved with Thanos' legs in some improper way, Thanos might see him as the antagonist. But as the story progresses, they might find a common enemy. So, initially, Loki's actions and motives that revolve around the legs could make him the antagonist in Thanos' eyes.
Well, it could be something like Thanos becomes intrigued by Loki's legs for some strange, otherworldly reason. Maybe Loki has some sort of magic or power that is centered around his legs that Thanos wants to possess or control.