While most characters can be seen as offshoots or copies of existing Comic Heroes. The backgrounds and modification stops them from being copies.
I have a hero that glides around, walks up walls and can cut open cars with his claws. While some aspects are copies of Wolverine or Spiderman as a whole it's a new character.
Let's face it after 50-60 years of comics it's hard to design a 100% never before seen hero.
Herc is a copy of Thor, in some respects. But totally different in the finished product.