Loki Is Not A Satan Expy

The Loki TV show labels the Loki variants as devils. In the pilot, one of the main characters talks to a little boy in a church in medieval France. He's eating blue candy called Kablooie and points to a stained glass window depicting the Devil when this main character, Agent Mobius, asks who was responsible for disturbing the timeline. In the Season 1 finale, a character named He Who Remains calls the Loki variants "devils."

 
Yes, Loki is deceptive. Yes, he's mischievous. Yes, he's rebellious. Yes, he's self-centered. And he wears horned headpieces. Yes, he falls from Asgard at the end of Thor 1. But here's why Loki is not like the Devil.
The Devil tempts people to lead them away from God. Why does he do that? He knows God wants nothing more than to have a loving relationship with His children. So when His children reject Him, it hurts Him. Satan hates God and he hates human beings because we have something he doesn't have: a body.
Satan corrupts people to hurt God.

Loki didn't do the bad things he did throughout the MCU to hurt someone. I've already anticipated my readers' objections: "What about Avengers 1?" and "What about when he sent the Destroyer after Thor, Sif, and the Warriors Three, leveling a small town and killing quite a few innocent people? What about attempting genocide on the Frost Giants?" I shall answer each of those counterarguments, in chronological order.

First, the Destroyer killing innocent people and leveling a small town in its pursuit of Thor, Sif, and the Warriors Three. When Loki sends the Destroyer after Thor and his friends, he recently learned that he is a Frost Giant and then he was given the throne when Odin fell into the Odinsleep. He has been yearning for validation and respect his entire life due to Thor being the golden child favored by Odin. He has already hated himself for a while and now that self-loathing is compounded by the fact that he is a member of the very race he has been taught to view as inferior.

 
So Loki looks to the throne he has been given as a way to give himself the external respect and validation he craves. Loki is in the middle of an identity crisis and a mental breakdown so he makes choices that he would not make in his right mind. Loki, when he's mentally stable, does not harm innocent people.
His mental instability reduces his culpability for the destruction of that town and the innocent lives lost.
Second, the attempted genocide of the Frost Giants. Again, Loki was not mentally stable so his culpability is diminished.

 
Let me also add that Thor tried to do the exact same thing at the beginning of the movie. Except that Thor tried to commit genocide against the Frost Giants on much weaker rationale: his coronation was interrupted because a handful of Frost Giants broke into the weapons vault under the royal palace and one Frost Giant insulted him by calling him a princess. And Thor broke a treaty, thus starting a war in the process to boot.

 
But Thor wasn't dealing with the revelation that he is not Asgardian, and not the son of Odin. Because he is Asgardian and he is the son of Odin. Loki was coping with the revelation that he is the son of Laufey, not the son of Odin, and a Frost Giant, a member of the very race he was taught to despise. And he was not coping well, either. The poor thing was having an identity crisis and a mental breakdown.
Maybe if Odin or Frigga gave Loki a hug after he learned that he was a Frost Giant and the son of Laufey, we wouldn't have seen Loki go down that path.

 
And last but not least, his bad deeds in The Avengers.

There are two things that greatly reduce Loki's culpability for his crimes in this movie.
One, he carried a scepter that had the Mind Stone in it. The Mind Stone was influencing/controlling Loki.
I have two pieces of evidence to support this. One, when the Avengers were only in the same room as the scepter, it made them act in ways that they'd normally wouldn't. And they didn't have the added pressure of being tortured and under duress like Loki did.

 
Two, Loki is usually extremely polite, even when he's about to attempt to commit an egregious crime (ex: "If you'll excuse me, I have to go destroy Jotunheim.") In The Avengers, Loki was notably vulgar and mean. He called Natasha a "mewling quim."Also, Marvel confirmed that Loki was being mind controlled/influenced by the Mind Stone on their web page about the MCU Loki. Second, it is reasonable to believe that between Thor 1 and The Avengers, Thanos tortured Loki. This is backed up by the state of Loki's health in the film.

 
Here are some gifs from the film showing that he is unwell. 

In the first GIF, Loki is walking and then he nearly falls. There wasn't anything on the floor that he could have tripped over. In the second GIF, a mind-controlled SHIELD agent puts his hand on Loki's lower back and supports him as he walks. In the third GIF, he is barely holding himself up as he's crouching in the back of a truck. He looks like he's about to faint, but he's using every ounce of strength to stay conscious.

In this next set of GIFs, he's really sweaty. In the second GIF, he's struggling to breathe and from the looks of things, his circulation is not working properly. Also, look at his eyes. They're dark, sunken in, and bloodshot. He didn't look this unwell in Thor 1, folks. And in Thor 1, he was not so weak that he was barely able to support himself.   

In this GIF, he looks confused and disoriented. This is just after he arrived on Earth. His skin also looks cold and clammy.  

In this last GIF, he has bruises and burns on his forehead. He didn't have those prior to falling from the Bifrost at the end of Thor 1. 

Now, fast forward to the Stuttgart sequence in The Avengers.

In both pics, he's holding a cane. The cane is not there solely as fashion accessory or a weapon. The cane is also there to prevent him from falling. 

Now what do these symptoms match up with? Heat exhaustion. Loki is a Frost Giant. He's not weak and he's able to sustain and tolerate a lot before reaching the breaking point. And what would be the most effective way to torture a Frost Giant, thus bypassing Loki's high pain tolerance? Heat torture.
This shows us that Loki did what he did in The Avengers under duress.

 
I've already anticipated another set of objections: namely, the way he responds to others calling him out on not showing remorse for his crimes in Thor: The Dark World. Instead of explaining that he was under duress and being mind controlled, Loki is arrogant. He even goes so much as to say that he's only taken a handful of lives compared to the amount of lives Odin has taken. And yes, those lives Loki took were innocent. However, Loki was being subjected to mind control/undue influence and he was under duress when he took the lives of innocent people.

 
So Loki was either under duress or mentally unstable when he took innocent lives in the MCU. There are a lot of reasons why Loki didn't explain that he was being mind controlled and that he was under duress. While the "I was being subjected to mind control and I was under duress," defense would have worked here on Midgard and took some time off his sentence, I don't know if that would have been the case on Asgard.

 
Second, he suffered a humiliating defeat in The Avengers so he was embarrassed.

 
And facing Asgardian justice for his crimes? He was also pretty embarrassed about that, too.

 
He did bad things because he wanted recognition and validation. Negative attention was still attention.
In fact, Loki doesn't actually corrupt people. The closest thing to Loki corrupting people is when he used the scepter to mind control Selvig and Hawkeye. But again, Loki was being subjected to mind control himself and he was under duress. Corrupting people is a cornerstone of Satan's nature.

 
The events of Thor 1 set him on a path he would not have taken, much less considered, in his right mind. But after finding out that he was adopted and a member of a race he was raised to view as inferior, Loki was not in the right frame of mind. Even when Loki is on the throne while Odin is in the Odinsleep, Thor's friends still don't show him respect. He was their lawful King and they disobeyed him. Fandral was the only one of Thor's friends who stood up for Loki after Thor was banished.

 
Now, the horned headpieces that Loki wears are not a symbol of villainy. They are actually symbolic of his sorcery. Now in the real world, sorcery is frowned upon within Christianity. But there are three kinds of magic. There's occult magic, which Christians should stay away from. There's parlor magic, which is harmless entertainment and therefore OK for Christians to enjoy. Parlor magic is literally the practitioner exploiting weaknesses in their audiences' perception in order to perform really cool tricks. And then there's fantasy magic, which is also innocuous. Loki's magic falls into this third category.

 
Also, characters who use magic are not necessarily evil. The Fairy Godmother from Cinderella is good. In the fantasy genre, white witches are usually good witches. And no, I'm not talking about the White Witch from The Chronicles of Narnia. She killed Aslan, who is the Christ-like character. If you kill the Christ-like character in a work of fiction, you're most likely evil.

Also, every bad deed Loki does in the MCU can be traced back to self-loathing.

I view Loki the same way I view the Phantom: he's not truly evil, but due to trauma and self-loathing, he does bad and selfish things.

Loki is also kind of like James Bond: he's good to have on your side, but he's not someone you want to get too close to.