The Monsters’ Monster is a children's book written and illustrated by Patrick McDonnell. It tells the story of a group of monsters who come together to build the ultimate monster, only to discover the true meaning of friendship and acceptance.
The Monsters’ Monster title on the book cover seems to use Telegdi Pro Reg designed by Amondó Szegi. Telegdi Pro is a dingbat, historical, and script font family with nine styles. You can get more information about the font here.