is it possible not to feel like a specific character? for instance, i feel like i am a toon (cartoon, specifically “who framed roger rabbit” or (mainly) “animaniacs” toons) rather than human, but not a specific character.

Absolutely! This is a common enough kind of fictionkin. Most often I see kin who are Pokemon, but there are also Tolkien elves, Digimon, various fiction-specific demons, etc etc. There is absolutely no reason why you couldn’t be a ‘toon’. Honestly this seems very interesting to me, if you were interested in discussing your experiences.