Greg James is a familiar voice and face on radio and TV. He's the host of BBC Radio 1's Breakfast Show. He is the host of several cricket podcasts and in 2016 raised over a million pounds for Sport Relief by completing five triathlons in five cities in five days. Greg has no superpowers. In his spare time he enjoys the idea of having hobbies. But in reality, he's made all of them into work.

Chris Smith is an award-winning journalist and broadcaster who delivered the news to millions of people every day as the presenter of Newsbeat on BBC Radio 1. Chris enjoyed a previous, glittering, literary career as the winner of the H.E. Bates Short Story Competition 1981 (Under Tens category) with his tale 'Where Are the Brandy Snaps?'. Chris has no superpowers either, although he enjoys pretending his cat Mabel can fly by picking her up and running around.

Illustrator Erica Salcedo studied Fine Art at Castilla-La Mancha University, before going on to study for a masters in Graphic Design. She uses a mixture of techniques to create her illustrations - from hand-drawing to digital manipulation - and always remembers to add a pinch of humour. Wolfish Stew (Bloomsbury), written by Susie Moore, was Erica's first picture book. She lives in Cuenca, Spain.