My Brother is a Superhero4 books in series
My Brother Is a Superhero Publisher's Summary
A brilliantly funny story from a meteoric new voice in children's fiction. Luke is a comic-mad 11-year-old who shares a tree house with his geeky older brother, Zack. Luke's only mistake is to go for a wee right at the wrong time.
While he's gone, an alien gives his undeserving, never-read-a-comic-in-his-life brother superpowers and then tells him to save the universe. Luke is massively annoyed about this, but when Zack is kidnapped by his archnemesis, Luke and his friends have only five days to find him and save the world....
Winner of the Waterstones Children's Book Prize 2016. Hilariously narrated by Joe Thomas, star of The Inbetweeners and Fresh Meat.