Kitty,anne franks imaginary friend kitty she called her when she little,kitty is a good listener and kind to anne and shes a bit clever one anne created in her head as imaginary friend when she was 13 years old she can confort,gives her a company if annes feels lonely or scared and her realization in the annex,the diary was connected to kitty if shes far away without the diary she vansihed and form by floating inks and fade away when she is inside shes the museum shes invisible