Cate Blanchett clearly had a fun time vamping it up as Hela in Thor: Ragnarok. That version of the character may have been pretty faithful to the source material in some ways, but there are definitely some things about the Hela of Marvel Comics that are very different from her big-screen counterpart.
Were you aware she has her own named weapon, called the "Nightsword"? Did you know her body is actually half-dead? Have you heard the Nazis were actually able to control her mind during WWII? Does the idea of her kissing Thanos weird you out a little bit? If these questions tickle your fancy, scroll on down, true believers. You're sure to learn something new about the Queen of Hel.
She Is Perhaps Best Known As The Ruler Of 'Hel'
Marvel's "Hel" shouldn't be confused with the hell you're probably familiar with, though they are pretty similar in form and function. Hel is located on Niffleheim, which happens to be one of the infamous Nine Realms Thor is always babbling about in the Marvel Cinematic Universe. It is ruled by Hela, often called the "Queen of Hel," and the appearance of Hel can be changed by Hela at any point in time.
While it can serve as a place of eternal punishment for some - a la the classic idea of hell - it also acts as the final resting place for all souls across the Nine Realms and includes Valhalla. Interestingly, Hela apparently has no control over what happens in Valhalla, even though she rules over Hel, as Valhalla is the home of fallen heroes who get to be honored in the afterlife.
Her Lineage Is Complicated And Shrouded In Mystery
Hela's birth and actual parentage are the subject of much confusion within the pages of Marvel Comics - it's unlikely this will clear it up much. Myth claims Hela was born to Loki and Angerboda. Then again, myths are myths for a reason. 2009's Thor: Tales of Asgard #1 claims she was "born ages ago to the being who would one day be called Odin and a goddess whose name and image have been lost in antiquity." That origin seems more in line with Thor: Ragnarok, but the idea of Loki as her true father still remained.
2012's Journey into Mystery #645 does nothing but muddle these waters further as Hela herself states, "No, Loki was never Hela's father." In as short a summation as is humanly possible, Kid Loki, a reincarnated child version of Loki, magically wrote another child named Leah into existence who was eventually sent back in time by Hela, after which the Queen of Hel implies that Leah was actually Hela the whole time. Yes, this means Loki was her creator and not her father and yes, it gives us a headache...
Like Every Asgardian, She Is Imbued With The Allspeak
The Allspeak, or "All-Tongue," is a lovely little cheat code of an ability that gives Asgardians a leg up when it comes to dealing with the many residents of the Nine Realms. Simply put, it automatically translates the words Asgardians speak into the native language of those they are speaking to.
Imagine how useful this would be to your average human being and how it would open the door to better conversation among people who could never communicate before. And your average, everyday human being isn't charged with running the day-to-day operations of Hel! Hela would have a tough time managing that without the Allspeak.
She Wields The Accursed 'Nightsword'
When you have a fancy, named weapon all to yourself - something along the lines of Thor's Mjolnir or Gorr's All-Black the Necrosword - you know you've made it to the big time. The Hela of Thor: Ragnarok is more into pulling magical knives out of nowhere, a power more reminiscent of Loki, but the Hela of Marvel Comics gets a weapon named Nightsword that she takes into battle.
Hela can apparently summon the sword whenever she sees fit, a power taken to the nth degree in Thor: Ragnarok, but when you have a blade called "Nightsword," you don't need to summon a bunch of knives and throw them around. In 1972's Thor #199, Hela battles Pluto (AKA Hades) to a full-on stalemate using Nightsword. That surely is no easy feat.