Books in the The Super Sidekicks series

The Super Sidekicks are back! Prepare for another side-splittingly hilarious adventureThe Super Sidekicks just saved the world and now they've been invited to join H.E.R.O. - the Heroic Earth Righteousness Organisation - an exclusive club for the planet's most famous superheroes. But before they can become members, the team must pass the hardest challenge in the universe, a test so scary and difficult only the truly heroic can survive.