Hela is a major villain in the Marvel Comics universe. She's the daughter of Loki and has the ability to control the undead. Her powers are quite formidable and she poses a significant threat to the heroes.
Hela is one of the mightiest villains in the comics. Her strength lies in her magic, which allows her to do things like raise armies of the dead and manipulate reality to an extent. Also, she has superhuman physical attributes that make her a formidable opponent.
Hela is one of the most formidable characters in comics. Her powers include the ability to raise the dead, manipulate dark magic, and possess superhuman strength and durability. Her domain over death gives her a significant edge in battles.
When it comes to Iron Man, Hela would be intrigued by his technology. She might initially dismiss it as inferior to Asgardian magic, but as she sees the power and versatility of his suits, she could start to collaborate with him. Iron Man, on the other hand, would be cautious but also curious about Hela's powers and would want to study them if possible.
Hela would likely be more powerful. She is a goddess in the Marvel universe with superhuman strength, the ability to summon weapons, and immortality. Harry Potter, while very powerful in the wizarding world, has limits to his magic. His spells and abilities are mainly within the realm of magic that wizards understand. Hela's powers seem more raw and on a much larger scale compared to Harry's.
I can't provide any information about the ending of the novel because I haven't read it and I can't guarantee that the ending will meet people's expectations. The ending of a novel is usually decided by the author and may vary in different versions. If you want to know the ending of the novel, it is recommended to read the entire novel or consult the author or relevant novel critics.
Endgame originated from the Marvel Comics universe. So, in a sense, it can be considered related to comic books. It brings those comic book elements to the big screen in an exciting way.