Joana Estrela is an illustrator and author living in Porto, Portugal. She studied Communication Design in Porto's Fine Art Faculty, and still lives and works next door to the school. In 2014, Plana published her first book: a graphic novel called Propaganda. In 2016, Planeta Tangerina published Mana, the winner of the 1st Serpa International Award for Picture Books. The book received the award for Best Illustration of a Picturebook (Portuguese Author) at the Amadora BD comics festival, the same year.

Jay Hulme is an award-winning transgender performance poet, speaker, writer, and educator. Alongside his writing and regular performances, he teaches in schools and consults and speaks at events and conferences on the importance of diversity in the media, and more specifically transgender inclusion and rights.

He writes poetry for children and young adults, and the five-poet collection Rising Stars, of which he was a part, was Highly Commended in the 2018 CLiPPA awards - the UK's biggest award for children's poetry collections. His collection, Clouds Cannot Cover Us was nominated for the 2021 Carnegie Medal.