Has anyone heard of the Fosters Home for Imaginary Friends Theory that explains how Frankie isn't even real?
Well for those who haven't heard of it, Madame Foster dreamt of her younger self and created Frankie.
Or...
Frankie's grandma died and in order to preserve her memory, she dreamt of Madame Foster and Mr. Hairyman (Forgot how to spell his name, struck with sadness, stayed with the imaginary Madame Foster so he won't forget her.
Or...
Frankie is just autistic.
There are a whole bunch of cartoon conspiracy theories. If you have some, feel free to add them in the comments and we can discuss them.