The Hero Kids Monster Compendium expansion includes 136 monsters for your game:

Bats, Beguilers, Boars, Brigands, Bugbears, Commoners, Constructs, Coot and Crone, Cultists, Dragons, Elementals, Firestarter, Flaming Skull, Foxes, Froglings, Gargoyle, Ghost, Giants, Gladiators, Goblins, Gorillas, Guards, Helm Knight, Hydra, Knights, Kobolds, Lizardkin, Minotaur, Mummies, Pirates, Ratlings, Rats, Scorpion, Sea Serpent, Skeletons, Slimes, Snakes, Spiders, Tengu, Water Beast, Weasels, Werewolf, Wolves, Wraith, Wyvern, Zombies...

NOTE: The print version of the Monster Compendium includes the all 136 monsters. Select the Print + PDF option (no extra cost) to also get the printable miniatures for all of the monsters.

EXTRA NOTE: The Hero Kids - Complete Fantasy PDF Bundle includes a 50% discount coupon for the softcover print version of Hero Kids - Fantasy RPG and the Hero Kids - Monster Compendium (the coupon is emailed to you when you buy the bundle). So if you want the whole lot (PDFs and print version of the rules), buy the bundle then use the coupon to buy the softcover print version of Hero Kids - Fantasy Expansion - Monster Compendium for half price!

Each monster section contains ecology and adventure hooks for the monsters. As Brian Benoit says:

"From the perspective of a GM, I absolutely love all the hooks you've included in the book. You could literally flip to any page and run an off-the-cuff adventure off of any one of the hooks provided, so I love the book from that perspective. I also like the lists of names included, makes it easy to name an NPC on the fly. It's a nice touch."

The PDF also comes with another 51 page PDF for all of the monster stand-ups.