Hel is a villain in the Spawn Comics.
She was one of the rulers of Hell until Spawn disposed of her and she later teams up with the Violator. She was originally from the Hellspawn series but was later added to the main series.
Hel is one of the rulers of Hell in the Spawn series until a hellspawn usurps her and she was saved by the Violator. Owing a debt she agrees to help Violator in his plans to control Jim Downing and later after Violator seals a portion of Malebolgia's power from Sam he later uses it on Hel to possess a human nurse to keep him unconscious. She was later discovered and was forced to feel and violator scolds her but promises her a new body after Susan Matthews, Marc Rozen's girlfriend, committed suicide. Hel later possess her and takes over her dead body posing as her. By doing this Hel would be close to Jim Downing and slowly siphon his powers however after Al's return he exposes Hel and later kills her. In the Hellspawn series we learned that she fought Simmons before but was defeated and her original body was destroyed in the process hence how she meets Violator.
Powers and abilities
Hel was a former empress of Hell thus having some similar abilities to other lords such as possession.
Todd McFarlane's Spawn