User blog comment:Wheatgerm/Spoiler/@comment-39615662-20191009052727

I don't add character pages for my stories, but if I was worried about spoiling a story I would just split it into two parts.

At the beginning I'd write: THE FOLLOWING IS BASIC INFORMATION ABOUT THE CHARACTERS OF [story name] AND WON'T SPOIL ANYTHING.

I'd then give basic info about each character- personality, traits, looks, whatever you think doesn't spoil anything.

For the second part of the page I'd write: '''THE FOLLOWING INFORMATION CONTAINS SPOILERS ABOUT THE CHARACTERS. READ AT YOUR OWN RISK.'''

Then I'd give information about their backstory (if you think it spoils something), what happens to them in the story, their relationships with the other characters, etc.

Or, you know, you could just at the top of the page write 'this has spoilers'. simple as that.