Okstad, Ella: - Ella Okstad returned to her native Norway after graduating where she now illustrates children's books. Squishy is her first imaginary cat.

Jones, Pip: - Pip Jones is a London-based children's author, who is most often found either writing, staring at the contents of the fridge, or herding her two children. Pip's rhyming series about Squishy McFluff: The Invisible Cat! was inspired by her daughter, who discovered her own imaginary kitten as a toddler. Pip also writes picture books. Her book Daddy's Sandwich is also available.