Gavin Aung Than 
Super Sidekicks 3: Trial of Heroes 

The 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.