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.
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.
Hela isn't Loki's daughter in the comic universe. Their characters have separate origins and roles. There's no established connection of that nature between them.
In many comic storylines, Hela is depicted as a powerful foe, but Thor often holds his own and can match or surpass her strength depending on the circumstances.