In this World Book Day special, join MARV and his friends in FIVE action-packed superhero adventures celebrating the ultimate superpower-KINDNESS!When Marvin puts on his superhero suit he becomes the unstoppable, invincible, MARV, a superhero with infinite powers fuelled by imagination. In these five mini tales, there's plenty of trouble a-foot and supervillains to defeat-from Professor Feather and the dreaded Duck of Doom to the Conjurer and her laser-blasting battle spaceships.For another superhero story featuring Marv, check out Marv and the Mega Robot, and discover how Marvin gets his super-suit, becomes a hero, and defeats his first villain.