original: Some of the characters are fully fictional, although they may have been based on actual persons.
simplifications: Some of the characters are made up, although they may have been based on actual people. Some characters are not real, although they may be based on real people. Some of the characters are fully fictional. They might have been based on actual persons. Some of the characters are completely made up. However, they may have been based on actual persons. Some of the characters are fully pretend. Others may have been based on people. Some characters are fictional, although they may have been based on actual persons. Some of the characters are fictional but may have been based on real people. Some of the characters are fully fictional, although they may have been based on actual persons. Some of the characters are fully fictional although they may have been based on actual persons. Some of the characters are completely fictional, although they may have been based on actual characters.