Brothers Unite (Hardcover) by Justin Larocca Hansen

Perfect for fans of Amulet, Sidekicks, and Zita the Spacegirl, this graphic novel series debut introduces Stretch and Brella, a pair of ordinary brothers whose extraordinary yard sale discovery turns them into superheroes

Tuck and Hudson are just two average suburban brothers—until their mother buys them a scarf and an umbrella at a yard sale. Quickly, the brothers realize that these ordinary-looking objects are full of magic, and that, with the help of their squirrel sidekick, they can use that magic to fight evil. As the boys move from fighting their neighborhood nemesis to facing bigger foes, they become Stretch and Brella, the unstoppable brother superhero duo. Soon, Stretch and Brella find themselves in another realm, where they take on enormous dragons and an evil knight in an incredible graphic novel adventure.