Your best to P.M one of the mods if you don't get a response. Personally I never use anyone under eighteen, I was warned once about an changed the story. It was just a dumb mistake on my behalf, in the case of using cartoon characters, you'd have to make it very clear they were cartoon characters, but whether you'd still be able to post it I wouldn't know.
Technically a cartoon character isn't any less fictional than one of the characters in the regular stories which feature 'real people'. 😀
...that didn't really help at all did it? Sorry. 🙄