Post History
As others intimated you can do pretty much anything you want with ancient / mythological characters. However, what you cannot do is use a representation from a film. e.g. You can use Thor but you m...
Answer
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/48723 License name: CC BY-SA 4.0 License URL: https://creativecommons.org/licenses/by-sa/4.0/
#2: Initial revision
As others intimated you can do pretty much anything you want with ancient / mythological characters. However, what you cannot do is use a representation from a film. e.g. You can use Thor but you must not make him similar to Marvel's Thor as the studio will claim your character is based on their copyrighted character.