Loki would probably be defiant at first. He has a strong sense of self - pride and would not easily submit to Thanos's abuse. He might hurl insults and threats at Thanos, even though he is in a vulnerable position.
One possible plot could be that Thanos sees Loki as a tool that has failed him. So, he subjects Loki to various forms of physical and mental abuse to break his spirit. Loki, being a survivor, tries to find ways to outwit Thanos even in his weakened state.
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.
Loki could also show signs of fear, though he would try to hide it. Inside, he knows the power that Thanos wields. But on the outside, he would maintain a facade of bravado. His reactions would be a mix of his natural cunning and the instinct to survive in a very dangerous situation.
It could also mean that there are fanfictions where Loki is depicted in situations that involve some form of abuse, which might be disturbing to some fans. However, in the world of fanfiction, different interpretations exist. Some might see it as exploring darker aspects of the character, while others may consider it going against the general perception of Loki. In many cases, such fanfictions might also violate the community guidelines of certain platforms if they are too extreme or violate ethical standards.
No, it's not that common. Fanfiction often focuses on more positive aspects of Loki, like his powers, his charm, and his interactions with Thor and other Avengers. However, 'loki is abused fanfiction' does exist for those who want to explore the darker, more complex sides of his character, but it doesn't have the same widespread popularity as other types.
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.
Well, one possible plot could be that Thanos uses his mind - controlling powers on Loki to make him steal powerful artifacts for his collection. Loki, being under Thanos' control, has to go against his own nature at times. For example, he might have to target Asgardian relics that he would otherwise protect.
Well, in some fanfictions, Loki is often depicted as more powerful than Thanos because of his magical abilities. Loki is a master of illusion and deception. He can create complex illusions to mislead his opponents, including Thanos. Thanos, on the other hand, mainly relies on his brute strength and the Infinity Stones. But Loki's magic can sometimes outwit Thanos' straightforward power plays.
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.